Android小知识库

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android {
signingConfigs {
debug {
storeFile file("你的.jks")
storePassword 'android'
keyAlias 'android'
keyPassword 'android'
}
}
}

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android {
signingConfigs {
release {
storeFile file("你的.jks")
storePassword 'android'
keyAlias 'android'
keyPassword 'android'
}
}
buildTypes {
debug {
signingConfig signingConfigs.release
}
}
}

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protected boolean isVisible;

@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if (getUserVisibleHint()) {
isVisible = true;
onVisible();
} else {
isVisible = false;
onInvisible();
}
}

protected void onVisible() {
lazyLoad();
}

protected void lazyLoad() {
if (!isVisible) {
return;
}
getData();
}

protected void onInvisible() {
}

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/**
* Created by ${USER} on ${DATE}.
*/

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textView.setTextColor(Color.parseColor("#FFFFFF"));
//或者
ContextCompat.getColor(context, R.color.color_name)

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private void showPopupMenu(View v) {
final View bgView = View.inflate(DemoApplication.getContext(), R.layout.demo_popup_window_bg, null);
bgView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
hidePopupWindow();
}
});
if (mPopupBackground == null) {
mPopupBackground = new PopupWindow(bgView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
}
mPopupBackground.showAtLocation(v, Gravity.BOTTOM, 0, 0);
}

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/aliwx_common_alpha_black">

</LinearLayout>

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public void onItemClick(AdapterView<?> adapterView, View view,
int position, long id) {

((MainActivity) getActivity()).showImageFragment(true, mData.get(position).get("title").toString(), mData.get(position).get("imgUrl").toString());

}

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public void showImageFragment(boolean show, String imgTxt, String imgUrl) {
// showActionbarWithTabs(!show);
if (show) {
getSupportFragmentManager().beginTransaction()
.show(imageDetailFragment).commit();
imageDetailFragment.setImgData(imgTxt, imgUrl);
} else {
getSupportFragmentManager().beginTransaction()
.hide(imageDetailFragment).commit();
}

}

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android:background="?attr/colorPrimary"

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TypedValue typedValue = new TypedValue();
mContext.getTheme().resolveAttribute(R.attr.colorPrimary, typedValue, true);
int colorPrimary = typedValue.data;//value.data里面存储着的就是获取到的colorPrimary的值

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Intent intent = new Intent(Intent.ACTION_CALL,
Uri.parse("tel:" + "400-036-1977"));
// intent.setAction(Intent.ACTION_CALL);// 直接拨号
intent.setAction(Intent.ACTION_DIAL);// 拨号盘
startActivity(intent);

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final ProgressDialog progress = new ProgressDialog(LoginActivity.this);
progress.setMessage("请稍等...");
progress.setCanceledOnTouchOutside(false);
progress.show();
progress.dismiss();

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@Override
public void setUserVisibleHint(boolean isVisibleToUser) {
super.setUserVisibleHint(isVisibleToUser);
if (isVisibleToUser) {
//相当于Fragment的onResume
} else {
//相当于Fragment的onPause
}
}

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public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
getActivity();
if (resultCode == Activity.RESULT_OK
&& requestCode == AppUtils.REQUEST_CODE_ISLOGIN) {
// 检查是否完善资料

if (AppUtils.getSharedPreferences(getActivity()).getBoolean(
"hasPersonalData", false)) {
// 取本地存取是否完善资料,完善直接提示咨询对话框
consultationDialog();
} else {
getCheckPersonalData();
}

}
}

startActivityForResult(intent,
AppConfig.REQUEST_CODE_DIALOGUE);// 不是调用 getActivity().startActivityForResult()。

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Resources res = getResources();
float fontSize = res.getDimension(R.dimen.font_size);

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Fragment mBeforeFragment = new Fragment();
public void switchFragment(Fragment currentFragment) {
if (currentFragment.isAdded()) {
getSupportFragmentManager().beginTransaction().hide(mBeforeFragment).show(currentFragment).commit();
} else {
getSupportFragmentManager().beginTransaction().hide(mBeforeFragment).add(R.id.container, currentFragment).commit();
}
mBeforeFragment = currentFragment;
}

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switchFragment(HomeFragment.newInstance());

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public static HomeFragment homeFragment = null;

public static HomeFragment newInstance() {
if (homeFragment == null) {
homeFragment = new HomeFragment();
}
return homeFragment;
}

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<EditText android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:inputType="phone" />
//文本类型，多为大写、小写和数字符号。
android:inputType="none"
android:inputType="text"
android:inputType="textCapCharacters" 字母大写
android:inputType="textCapWords" 首字母大写
android:inputType="textCapSentences" 仅第一个字母大写
android:inputType="textAutoCorrect" 自动完成
android:inputType="textAutoComplete" 自动完成
android:inputType="textMultiLine" 多行输入
android:inputType="textImeMultiLine" 输入法多行（如果支持）
android:inputType="textNoSuggestions" 不提示
android:inputType="textUri" 网址
android:inputType="textEmailAddress" 电子邮件地址
android:inputType="textEmailSubject" 邮件主题
android:inputType="textShortMessage" 短讯
android:inputType="textLongMessage" 长信息
android:inputType="textPersonName" 人名
android:inputType="textPostalAddress" 地址
android:inputType="textPassword" 密码
android:inputType="textVisiblePassword" 可见密码
android:inputType="textWebEditText" 作为网页表单的文本
android:inputType="textFilter" 文本筛选过滤
android:inputType="textPhonetic" 拼音输入
//数值类型
android:inputType="number" 数字
android:inputType="numberSigned" 带符号数字格式
android:inputType="numberDecimal" 带小数点的浮点格式
android:inputType="phone" 拨号键盘
android:inputType="datetime" 时间日期
android:inputType="date" 日期键盘
android:inputType="time" 时间键盘

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/**
* 发送短信
* @param smsBody
*/
private void sendSMS(String smsBody)
{
//Uri smsToUri = Uri.parse("smsto:10000"); //如果想指定发送人
Uri smsToUri = Uri.parse("smsto:");
Intent intent = new Intent(Intent.ACTION_SENDTO, smsToUri);
intent.putExtra("sms_body", smsBody);
startActivity(intent);
}

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Intent intent = new Intent(
"android.intent.action.VIEW");
intent.setData(Uri
.parse("market://details?id=com.adobe.flashplayer"));
startActivity(intent);

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//检测系统中是否已经安装了adobe flash player插件，插件的packageName是com.adobe.flashplayer：
private boolean check() {
PackageManager pm = getPackageManager();
List<PackageInfo> infoList = pm
.getInstalledPackages(PackageManager.GET_SERVICES);
for (PackageInfo info : infoList) {
if ("com.adobe.flashplayer".equals(info.packageName)) {
return true;
}
}
return false;
}

private void isAvilible(String packageName) {

PackageInfo packageInfo;
try {
packageInfo = this.getPackageManager().getPackageInfo(packageName,
0);

} catch (NameNotFoundException e) {
packageInfo = null;
e.printStackTrace();
}
if (packageInfo != null) {
//1、通过包名
Intent intent = new Intent();
intent = getPackageManager().getLaunchIntentForPackage(packageName);
startActivity(intent);
//2、通过类名：
Intent intent=new Intent();
intent.setComponent(new ComponentName(packageName, "com.joe.internet.Main"));
startActivity(intent);
}

}

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new AlertDialog.Builder(this)
.setTitle("choice")
.setItems(new String[] { "选择1", "选择2", "选择3", "选择4" },
new DialogInterface.OnClickListener() {

@Override
public void onClick(DialogInterface dialog,
int which) {
Toast.makeText(MyContentActivity.this,
which + "", Toast.LENGTH_SHORT)
.show();

}
}).show();

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<ProgressBar
android:id="@+id/mProgress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"          android:indeterminateDrawable="@drawable/progress_rotate" />

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<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item>
<rotate
android:drawable="@drawable/progressbar"
android:duration="300"
android:fromDegrees="0.0"
android:pivotX="50.0%"
android:pivotY="50.0%"
android:toDegrees="360.0" />
</item>
</layer-list>

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<ProgressBar
android:id="@+id/ProgressBar01"
style="@style/animStyle"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_centerInParent="true" />

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<style name="animStyle" parent="@android:style/Widget.ProgressBar.Large">
<item name="android:indeterminateDrawable">@anim/test</item>
</style>

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<?xml version="1.0" encoding="UTF-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false" >

<item
android:drawable="@drawable/t1"
android:duration="500"/>
<item
android:drawable="@drawable/t2"
android:duration="500"/>
<item
android:drawable="@drawable/t3"
android:duration="500"/>
<item
android:drawable="@drawable/t4"
android:duration="500"/>
<item
android:drawable="@drawable/t5"
android:duration="500"/>

</animation-list>

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public String Md5(String plainText) {
String result = "";
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
byte b[] = md.digest();

int i;

StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
result = buf.toString().toUpperCase();// 32位的加密（转成大写）

buf.toString().substring(8, 24);// 16位的加密

} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return result;
}

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Timer timer = new Timer();
timer.schedule(new TimerTask() {
@Override
public void run() {
// TODO Auto-generated method stub
Intent goIntent = new Intent();
goIntent.setClass(LauncherActivity.this, DemoActivity.class);
startActivity(goIntent);
}
}, 3 * 1000);
}

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new Handler().postDelayed(new Runnable() {
@Override
public void run() {
startActivity(new Intent(SplashScreen.this,
DomobSampleActivity.class));
finish();
}
}, 1000);

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List<Integer> list = new ArrayList<Integer>();
for (int i = 0; i < 10; i++) {
list.add(i);
}
Collections.shuffle(list);
for (int v : list) {
Log.d("wxl", "V===" + v);
}

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Random random = new Random();
int ran = random.nextInt(keywordsList.size());
String tmp = keywordsList.get(ran).get("keyword").toString();

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<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true"
android:drawable="@drawable/button_pressed"/><!-- pressed -->
<item android:state_focused="true"
android:drawable="@drawable/button_focused"/><!-- focused -->
<item android:drawable="@drawable/button_normal"/><!-- default -->
</selector>

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public class LinedEditText extends EditText {
private Paint linePaint;
private float margin;
private int paperColor;

public LinedEditText(Context paramContext, AttributeSet paramAttributeSet) {
super(paramContext, paramAttributeSet);
this.linePaint = new Paint();
}
@Override
protected void onDraw(Canvas paramCanvas) {
paramCanvas.drawColor(this.paperColor);
int i = getLineCount();// 得到总的行數
int j = getHeight();// 获得TextView的高度
int k = getLineHeight();// 获得TextView的行高
int m = j / k + 1;// 总的线数
if (i < m)
i = m;
int n = getCompoundPaddingTop();
Log.d("wxl", "n----" + n);
paramCanvas.drawLine(0.0F, n, getRight(), n, this.linePaint);
for (int i2 = 0;; i2++) {
if (i2 >= i) {
setPadding(10 + (int) this.margin, 0, 0, 0);
super.onDraw(paramCanvas);
paramCanvas.restore();
return;
}
n += k;
paramCanvas.drawLine(0.0F, n, getRight(), n, this.linePaint);
paramCanvas.save();
}
}
}

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public static void hideSoftInput(Activity activity) {
if (activity.getCurrentFocus() != null)
((InputMethodManager) activity
.getSystemService(Context.INPUT_METHOD_SERVICE))
.hideSoftInputFromWindow(activity.getCurrentFocus()
.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}

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android:windowSoftInputMode="adjustResize"
android:windowSoftInputMode="adjustPan|stateAlwaysVisible"

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adjustUnspecified|stateHidden
android:windowSoftInputMode="adjustUnspecified|stateHidden"

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public String getVersionName(Context context) {
PackageManager manager = context.getPackageManager();
String packageName = context.getPackageName();
try {
PackageInfo info = manager.getPackageInfo(packageName, 0);
return info.versionName;
} catch (NameNotFoundException e) {
return "1.0";
}
}

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TelephonyManager mTelephonyMgr = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
String imsi = mTelephonyMgr.getSubscriberId();
String imei = mTelephonyMgr.getDeviceId();
Log.i("wxl", "imsi="+imsi);为null
Log.i("wxl", "imei="+imei);
另外不要忘了在AndroidManifest.xml中加上读取手机状态的权限
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>

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public class Log {
private static final String TAG = "wxl";
private static final boolean LOG = true;
public static void i(String msg) {
if (LOG)
android.util.Log.i(TAG , msg);
}
public static void d(String msg) {
if (LOG)
android.util.Log.d(TAG , msg);
}
public static void w(String msg) {
if (LOG)
android.util.Log.w(TAG , msg);
}
public static void w(String msg, Throwable throwable) {
if (LOG)
android.util.Log.w(TAG , msg, throwable);
}
public static void v(String msg) {
if (LOG)
android.util.Log.v(TAG , msg);
}
public static void e(String msg) {
android.util.Log.e(TAG , msg);
}
public static void e(String msg, Throwable throwable) {
android.util.Log.e(TAG , msg, throwable);
}
}

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参数1：向后台任务的执行方法传递参数的类型 ；
参数2：在后台任务执行过程中，要求主UI线程处理中间状态，通常是一些UI处理中传递的参数类型；
参数3：后台任务执行完返回时的参数类型。
private class MyAsyncTask extends AsyncTask<Integer, String, Void> {

// 实现抽象方法doInBackground()，代码将在后台线程中执行，由execute()触发
protected Void doInBackground(Integer... params) {
return null;
}

// 任务启动，可以在这里显示一个对话框，这里简单处理
protected void onPreExecute() {
super.onPreExecute();
}

// 取消
protected void onCancelled() {
super.onCancelled();
}

// 定义后台进程执行完后的处理
protected void onPostExecute(Void result) {
super.onPostExecute(result);
Toast.makeText(MainActivity.this, "OK", Toast.LENGTH_SHORT).show();
}

// 更新进度,在UI主线程执行的内容，将item加入list中。方法中的参数为范式方式，实质为数组，由于我们只传递了item一个String，要获取，为values[0]
protected void onProgressUpdate(String... values) {
super.onProgressUpdate(values);
}

}

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new MyAsyncTask().execute(参数1);// 创建后台任务的对象

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public boolean checkNetworkInfo() {
ConnectivityManager conMan = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
// mobile 3G Data Network
State mobile = conMan.getNetworkInfo(ConnectivityManager.TYPE_MOBILE)
.getState();
// wifi
State wifi = conMan.getNetworkInfo(ConnectivityManager.TYPE_WIFI)
.getState();
// 如果3G网络和wifi网络都未连接，且不是处于正在连接状态 则进入Network Setting界面 由用户配置网络连接
if (mobile == State.CONNECTED || mobile == State.CONNECTING)
return true;
if (wifi == State.CONNECTED || wifi == State.CONNECTING)
return true;
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(getResources().getString(R.string.no_network))
.setCancelable(false)
.setPositiveButton(
getResources().getString(R.string.configuration),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {

// 进入无线网络配置界面
startActivity(new Intent(
Settings.ACTION_WIRELESS_SETTINGS));
MainActivity.this.finish();
}
})
.setNegativeButton(getResources().getString(R.string.quit),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MainActivity.this.finish();
}
});
builder.show();
return false;
}

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// 检查网络状态
if (!checkNetworkInfo()) {
return;
}

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URLEncoder.encode(String s); 网址请求中文解析
…代表省略号

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URLEncoder.encode(content, "utf-8")

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android:textStyle=”bold”

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TextView tv = (TextView)findViewById(R.id.TextView01);
TextPaint tp = tv.getPaint();
tp.setFakeBoldText(true);

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(1)viewHolder.title.setText(Html.fromHtml("<b>"
+ listTitle.get(position).get("title") + "</b>"));
(2)TextView.setText(Html.fromHtml("<font color=#FF0000>hello</font>"));

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textView.setBackgroundResource(R.drawable.bg_menu_1);设置背景图片
textView.setBackgroundColor(0xffffffff);
setImageResource與xml中的src的屬性才是相匹配的，而setBackgroundResource是與xml中的background屬性相匹配
的
holder.chat_sound_iv_right.setBackgroundResource(0);//没有图片

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用法如下：
在xml中
android:ellipsize = "end"　　  省略号在结尾
android:ellipsize = "start" 　　省略号在开头
android:ellipsize = "middle"     省略号在中间
android:ellipsize = "marquee"  跑马灯
最好加一个约束android:singleline = "true"
跑马灯
android:singleLine="true"
android:ellipsize="marquee"
android:focusableInTouchMode="true"
android:focusable="true"
android:marqueeRepeatLimit="marquee_forever"
android:singleLine=true 表示使用单行文字，多行文字也就无所谓使用Marquee效果了。
android:marqueeRepeatLimit，设置走马灯滚动的次数。
android:ellipsize，设置了文字过长时如何切断文字，可以有none, start,middle, end, 如果使用走马灯效果则设为marquee.
android:focusable，Android的缺省行为是在控件获得Focus时才会显示走马灯效果

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<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/professional_1"/>
<item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/professional_1"/>
<item android:drawable="@drawable/professional"/>
</selector>

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private DecimalFormat df;
df = new DecimalFormat("0.0");
float data;
df.format(data);//返回值

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double juli = 1569;
String result = String.format("%.1f", juli/1000);

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<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >

<RadioButton
android:id="@+id/open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:layout_marginTop="10dip"
android:button="@drawable/radiobutton"
android:checked="true"
android:text="@string/open_album"
android:textColor="#000000"
android:textSize="16dip" />

<RadioButton
android:id="@+id/secrecy"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="10dip"
android:button="@drawable/radiobutton"
android:text="@string/secrecy_album"
android:textColor="#000000"
android:textSize="16dip" />
</RadioGroup>

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Drawable drawable = getResources().getDrawable(R.drawable.ji_dot_nor);
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight());
textView.setCompoundDrawablesWithIntrinsicBounds(null, drawable, null, null);
说明：setCompoundDrawablesWithIntrinsicBounds(left, top, right, bottom)
意思是设置Drawable显示在text的左、上、右、下位置。(Textview、Button都可以)

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<TextView
android:id="@id/textView2"
android:layout_width="fill_parent"
android:layout_height="2.0px"
android:background="@color/orange" />

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SpannableString spannableString = new SpannableString(str);
spannableString.setSpan(new ClickableSpan() {
public void onClick(View view) {
// Intent intent = new Intent(ApkTest.this, Apk.class);
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"
+ "15261589767"));
startActivity(intent);
}
}, 0, str.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
TextView.setText(spannableString);
TextView.setMovementMethod(LinkMovementMethod.getInstance());

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String  title =”123456”;
SpannableString titleStr = new SpannableString(title);
titleStr.setSpan(new ForegroundColorSpan(Color.RED), 0,
titleStr.length(), 0);
textView.setText(titleStr);

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DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);

displayMetrics.widthPixels + "x"
+ displayMetrics.heightPixels;

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linearLayout = (LinearLayout) findViewById(R.id.linearLayout2);
LayoutParams layoutParams = new LinearLayout.LayoutParams(0,
LinearLayout.LayoutParams.WRAP_CONTENT, 1);//1均分属性
layoutParams.setMargins(10, 10, 10, 10);

Button button = new Button(MainActivity.this);
button.setLayoutParams(layoutParams);
linearLayout.addView(button);

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private TextView overlay;
private void initOverlay() {
LayoutInflater inflater = LayoutInflater.from(this);
overlay = (TextView) inflater.inflate(R.layout.overlay, null);
overlay.setVisibility(View.INVISIBLE);
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.TYPE_APPLICATION,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
PixelFormat.TRANSLUCENT);
WindowManager windowManager = (WindowManager) this
.getSystemService(Context.WINDOW_SERVICE);
windowManager.addView(overlay, lp);
}
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#ffffff"
android:gravity="center"
android:maxWidth="80dip"
android:minWidth="80dip"
android:padding="5dip"
android:textColor="#3399ff"
android:textSize="70sp" />

private LinearLayout.LayoutParams layoutParams = null;
private LinearLayout.LayoutParams btnParmas;

layoutParams = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
layoutParams.setMargins(
(int) getResources().getDimension(
R.dimen.lable_left), 0, 0, 0);
btnParmas = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
(int) getResources().getDimension(
R.dimen.lable_height));

for (int i = 0; i < lables.length; i++) {
LinearLayout linearLayout = new LinearLayout(activity);
lableColor = random.nextInt(lableColors.length);
Button lable = new Button(activity);
lable.setText(lables[i]);
lable.setGravity(Gravity.CENTER_HORIZONTAL
| Gravity.CENTER_VERTICAL);
lable.setTextSize(getResources().getDimension(
R.dimen.lable));
lable.setTextColor(getResources().getColor(
R.color.white));
lable.setBackgroundResource(lableColors[i]);
linearLayout.addView(lable, btnParmas);
holder.play_lables.addView(linearLayout, layoutParams);
}

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editText1.addTextChangedListener(watcher);
TextWatcher watcher = new TextWatcher() {
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
}
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
}
public void afterTextChanged(Editable arg0) {
}
};

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AndroidManifest加入
android:configChanges="orientation|keyboardHidden"

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Configuration newConfig = getResources().getConfiguration();
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE){
//横屏
}else if(newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
//竖屏
}else if(newConfig.hardKeyboardHidden == Configuration.KEYBOARDHIDDEN_NO){
//键盘没关闭。屏幕方向为横屏
}else if(newConfig.hardKeyboardHidden == Configuration.KEYBOARDHIDDEN_YES){
//键盘关闭。屏幕方向为竖屏
}

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private List<String> getData() {
List<String> data = new ArrayList<String>();
data.add("123");
data.add("345");
data.add("456");
data.add("567");
return data;
}

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private List<Map<String, Object>> getData() {
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();

Map<String, Object> map = new HashMap<String, Object>();
map.put("title", "G1");
map.put("info", "google 1");
map.put("img", R.drawable.i1);
list.add(map);

map = new HashMap<String, Object>();
map.put("title", "G2");
map.put("info", "google 2");
map.put("img", R.drawable.i2);
list.add(map);

map = new HashMap<String, Object>();
map.put("title", "G3");
map.put("info", "google 3");
map.put("img", R.drawable.i3);
list.add(map);

return list;
}

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data.clear();
listView.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_expandable_list_item_1,getData()));

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LinkedList<String> list = new LinkedList<String>();
list.addFirst("000");

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public boolean isMobileNO(String mobiles) {
String expression = "((^(13|15|18)[0-9]{9}$)|(^0[1,2]{1}\\d{1}-?\\d{8}$)|(^0[3-9] {1}\\d{2}-?\\d{7,8}$)|(^0[1,2]{1}\\d{1}-?\\d{8}-(\\d{1,4})$)|(^0[3-9]{1}\\d{2}-? \\d{7,8}-(\\d{1,4})$))";
Pattern pattern = Pattern.compile(expression);
Matcher matcher = pattern.matcher(mobiles);
Log.d("wxl", matcher.matches() + "");
return matcher.matches();
}

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public boolean isNumber(String str)
{
java.util.regex.Pattern pattern=java.util.regex.Pattern.compile("[0-9]*");
java.util.regex.Matcher match=pattern.matcher(str);
if(match.matches()==false)
{
return false;
}
else
{
return true;
}
}

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SharedPreferences sharedPreferences = getSharedPreferences("test", Context.MODE_PRIVATE);
Editor editor = sharedPreferences.edit();//获取编辑器
editor.putString("name", "张三");
editor.putInt("age", 24);
editor.putBoolean("AutoLogin", false);

editor.commit();//提交修改

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SharedPreferences sharedPreferences = getSharedPreferences("test", Context.MODE_PRIVATE);
//getString()第二个参数为缺省值,如果preference中不存在该key,将返回缺省值
String name = sharedPreferences.getString("name", "");
int age = sharedPreferences.getInt("age", 1);
boolean autoLogin= sharedPreferences. getBoolean("AutoLogin", false);

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Intent intent = new Intent(ActivityPage.this, Player.class);
//保存信息
Bundle mBundle = new Bundle();
mBundle.putString("realname ", realname);
intent.putExtras(mBundle);

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realname = this.getIntent().getStringExtra("realname");
Intent intent = new Intent();
intent.setClass(HomeActivity.this, CompanyActivity.class);
intent.putExtra("mCompanySupply", mCompanySupply);
startActivity(intent);
CompanyActivity.class:
ArrayList<ClassifySub3Bean>  mCompanySupply = (ArrayList<ClassifySub3Bean>) getIntent()
.getSerializableExtra("mCompanySupply");

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private static final int REQUEST_CODE_A = 0;
private static final int RESULT_CODE_B = 0;
Intent intent = new Intent();
Bundle bundle = new Bundle();
intent.setClass(MainActivity.this, TestBActivity.class);
bundle.putString("msg", textView.getText().toString());
intent.putExtras(bundle);
startActivityForResult(intent, REQUEST_CODE_A);

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_A && resultCode == RESULT_OK) {
String str=data.getExtras().getString("result");
}
}

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private static final int RESULT_CODE_B = 0;
Intent intent = new Intent();
intent.putExtra("result", textView.getText().toString());
setResult(RESULT_OK, intent);
finish();

public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
Intent intent = new Intent();
intent.putExtra("result", "直接返回");
setResult(RESULT_OK, intent);
this.finish();
return true;
} else {
return super.onKeyDown(keyCode, event);
}
}

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Intent intent = new Intent();
intent.putStringArrayListExtra("mSelectedPhotos",
mSelectedPhotos);
setResult(RESULT_OK, intent);

ArrayList<String> mSelectedPhotos = (ArrayList<String>) intent
.getStringArrayListExtra("mSelectedPhotos");

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<include
android:id="@+id/included1"
layout="@layout/anotherlayout" />

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private static Boolean isExit = false;
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (isExit == false) {
isExit = true;
Toast.makeText(this, "再按一次退出程序", Toast.LENGTH_SHORT).show();
new Timer().schedule(new TimerTask() {
@Override
public void run() {
isExit = false;
}
}, 2000);
} else {
finish();
System.exit(0);
}
}
return false;
}

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@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
long secondTime = System.currentTimeMillis();
if (secondTime - firstTime > 800) {//如果两次按键时间间隔大于800毫秒，则不退出
Toast.makeText(MainActivity.this, "再按一次退出程序...",
Toast.LENGTH_SHORT).show();
firstTime = secondTime;//更新firstTime
return true;
} else {
System.exit(0);//否则退出程序
}
}
return super.onKeyUp(keyCode, event);
}

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TranslateAnimation left, right;
right = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -1f,
Animation.RELATIVE_TO_PARENT, -2f,
Animation.RELATIVE_TO_PARENT, 0f, Animation.RELATIVE_TO_PARENT,
0f);
left = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -2f,
Animation.RELATIVE_TO_PARENT, -1f,
Animation.RELATIVE_TO_PARENT, 0f, Animation.RELATIVE_TO_PARENT,
0f);
right.setDuration(25000);
left.setDuration(25000);
right.setFillAfter(true);
left.setFillAfter(true);

right.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}

@Override
public void onAnimationRepeat(Animation animation) {
}

@Override
public void onAnimationEnd(Animation animation) {
runImage.startAnimation(left);
}
});
left.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}

@Override
public void onAnimationRepeat(Animation animation) {
}

@Override
public void onAnimationEnd(Animation animation) {
runImage.startAnimation(right);
}
});
runImage.startAnimation(right);

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<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:fromXDelta="0"
android:interpolator="@anim/cycle_7"
android:toXDelta="10" />

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<?xml version="1.0" encoding="utf-8"?>
<cycleInterpolator xmlns:android="http://schemas.android.com/apk/res/android"
android:cycles="7" />

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Animation shake = AnimationUtils.loadAnimation(
MainActivity.this, R.anim.animlayout);
btn.setAnimation(shake);