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android 之控件篇

2015-12-23 10:09 489 查看
1.Menu:菜单,点击菜单键后弹出的选项菜单
private boolean isMore = false;// menu菜单翻页控制
AlertDialog menuDialog;// menu菜单Dialog
GridView menuGrid;
View menuView;

private final int ITEM_SEARCH = 0;// 搜索
private final int ITEM_FILE_MANAGER = 1;// 文件管理
private final int ITEM_DOWN_MANAGER = 2;// 下载管理
private final int ITEM_FULLSCREEN = 3;// 全屏
private final int ITEM_MORE = 11;// 菜单

/** 菜单图片 **/
int[] menu_image_array = { R.drawable.menu_search, R.drawable.menu_filemanager, R.drawable.menu_downmanager,
R.drawable.menu_fullscreen, R.drawable.menu_inputurl, R.drawable.menu_bookmark,
R.drawable.menu_bookmark_sync_import, R.drawable.menu_sharepage, R.drawable.menu_quit,
R.drawable.menu_nightmode, R.drawable.menu_refresh, R.drawable.menu_more };
/** 菜单文字 **/
String[] menu_name_array = { "搜索", "文件管理", "下载管理", "全屏", "网址", "书签", "加入书签", "分享页面", "退出", "夜间模式", "刷新", "更多" };
/** 菜单图片2 **/
int[] menu_image_array2 = { R.drawable.menu_auto_landscape, R.drawable.menu_penselectmodel,
R.drawable.menu_page_attr, R.drawable.menu_novel_mode, R.drawable.menu_page_updown,
R.drawable.menu_checkupdate, R.drawable.menu_checknet, R.drawable.menu_refreshtimer,
R.drawable.menu_syssettings, R.drawable.menu_help, R.drawable.menu_about, R.drawable.menu_return };
/** 菜单文字2 **/
String[] menu_name_array2 = { "自动横屏", "笔选模式", "阅读模式", "浏览模式", "快捷翻页", "检查更新", "检查网络", "定时刷新", "设置", "帮助", "关于",
"返回" };<pre class="html" name="code">@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

/************复选框*********/
//根据ID找到该文本控件
tv = (TextView)this.findViewById(R.id.tvSex);
//根据ID找到RadioGroup实例
RadioGroup group = (RadioGroup)this.findViewById(R.id.radioGroup);
//绑定一个匿名监听器
group.setOnCheckedChangeListener(new OnCheckedChangeListener() {

@Override
public void onCheckedChanged(RadioGroup arg0, int arg1) {
// TODO Auto-generated method stub
//获取变更后的选中项的ID
int radioButtonId = arg0.getCheckedRadioButtonId();
//根据ID获取RadioButton的实例
RadioButton rb = (RadioButton)MainActivity.this.findViewById(radioButtonId);
//更新文本内容,以符合选中项
tv.setText("您的性别是:" + rb.getText());
}
});

menuView = View.inflate(this, R.layout.gridview_menu, null);// 找出main下面的gridview_menu
// 创建AlertDialog
menuDialog = new AlertDialog.Builder(this).create();
menuDialog.setView(menuView);
menuDialog.setOnKeyListener(new OnKeyListener() {
public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_MENU)// 监听按键
dialog.dismiss();
return false;
}
});

menuGrid = (GridView) menuView.findViewById(R.id.gridview);
menuGrid.setAdapter(getMenuAdapter(menu_name_array, menu_image_array));
/** 监听menu选项 **/
menuGrid.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
switch (arg2) {
case ITEM_SEARCH:// 搜索

break;
case ITEM_FILE_MANAGER:// 文件管理

break;
case ITEM_DOWN_MANAGER:// 下载管理

break;
case ITEM_FULLSCREEN:// 全屏

break;
case ITEM_MORE:// 翻页
if (isMore) {
menuGrid.setAdapter(getMenuAdapter(menu_name_array2, menu_image_array2));
isMore = false;
} else {// 首页
menuGrid.setAdapter(getMenuAdapter(menu_name_array, menu_image_array));
isMore = true;
}
menuGrid.invalidate();// 更新menu
menuGrid.setSelection(ITEM_MORE);
break;
}

}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add("menu");// 必须创建一项
return super.onCreateOptionsMenu(menu);
}

private SimpleAdapter getMenuAdapter(String[] menuNameArray, int[] imageResourceArray) {
ArrayList<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();
for (int i = 0; i < menuNameArray.length; i++) {
HashMap<String, Object> map = new HashMap<String, Object>();
map.put("itemImage", imageResourceArray[i]);
map.put("itemText", menuNameArray[i]);
data.add(map);
}
SimpleAdapter simperAdapter = new SimpleAdapter(this, data, R.layout.item_menu,
new String[] { "itemImage", "itemText" }, new int[] { R.id.item_image, R.id.item_text });
return simperAdapter;
}

@Override
public boolean onMenuOpened(int featureId, Menu menu) {
if (menuDialog == null) {
menuDialog = new AlertDialog.Builder(this).setView(menuView).show();
} else {
menuDialog.show();
}
return false;// 返回为true 则显示系统menu
}





2.Toast是Android中用来显示显示信息的一种机制,和Dialog不一样的是,Toast是没有焦点的,而且Toast显示的时间有限,过一定的时间就会自动消失。而且Toast主要用于向用户显示提示消息,当然大家也可以根据自己的需求来自定义自己想要的效果。

1.

Toast.makeText(getApplicationContext(), "默认Toast样式",
Toast.LENGTH_SHORT).show();

2.

toast = Toast.makeText(getApplicationContext(),
"自定义位置Toast", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
toast.show();

3.

toast = Toast.makeText(getApplicationContext(),
"带图片的Toast", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER, 0, 0);
LinearLayout toastView = (LinearLayout) toast.getView();
ImageView imageCodeProject = new ImageView(getApplicationContext());
imageCodeProject.setImageResource(R.drawable.icon);
toastView.addView(imageCodeProject, 0);
toast.show();

4

LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.custom,
(ViewGroup) findViewById(R.id.llToast));
ImageView image = (ImageView) layout
.findViewById(R.id.tvImageToast);
image.setImageResource(R.drawable.icon);
TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);
title.setText("Attention");
TextView text = (TextView) layout.findViewById(R.id.tvTextToast);
text.setText("完全自定义Toast");
toast = new Toast(getApplicationContext());
toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();

5.

new Thread(new Runnable() {
public void run() {
showToast();
}
}).start();

3.Progressbar

(1)   带有进度条的   ProgressBar

MainActivity.java

public class MainActivity extends Activity {
@Override

protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

// Request the progress bar to be shown in the title
requestWindowFeature(Window.FEATURE_PROGRESS);
setContentView(R.layout.activity_main);
setProgressBarVisibility(true);// 设置在title里的ProgressBar可见

final ProgressBar progressHorizontal = (ProgressBar) findViewById(R.id.progress_horizontal);

setProgress(progressHorizontal.getProgress() * 100);// 为title中的ProgressBar设置进度
setSecondaryProgress(progressHorizontal.getSecondaryProgress() * 100);// 为title中的ProgressBar设置二级进度

Button button = (Button) findViewById(R.id.increase);// 一级进度递增
button.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
progressHorizontal.incrementProgressBy(1);
// Title progress is in range 0..10000
setProgress(100 * progressHorizontal.getProgress());// 为title中的ProgressBar设置进度
}
});

button = (Button) findViewById(R.id.decrease);// 一级进度递减
button.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
progressHorizontal.incrementProgressBy(-1);
// Title progress is in range 0..10000
setProgr
cc90
ess(100 * progressHorizontal.getProgress());// 为title中的ProgressBar设置进度
}
});

button = (Button) findViewById(R.id.increase_secondary);// 二级进度递增
button.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
progressHorizontal.incrementSecondaryProgressBy(1);
// Title progress is in range 0..10000
setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());
}
});

button = (Button) findViewById(R.id.decrease_secondary);// 二级进度递减
button.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
progressHorizontal.incrementSecondaryProgressBy(-1);
// Title progress is in range 0..10000
setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());
}
});
}
}


activity_main.xml

<ProgressBar android:id="@+id/progress_horizontal"
style="?android:attr/progressBarStyleHorizontal"
android:layout_width="200dip"
android:layout_height="wrap_content"
android:max="100"
android:progress="50"
android:secondaryProgress="75" />

<Button
android:id="@+id/increase"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginTop="100dp"
android:layout_marginLeft="50dp"
/>

<Button
android:id="@+id/decrease"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginTop="100dp"
android:layout_marginLeft="150dp"/>

<Button
android:id="@+id/increase_secondary"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginTop="200dp"
android:layout_marginLeft="50dp"/>

<Button
android:id="@+id/decrease_secondary"
android:layout_width="100dp"
android:layout_height="80dp"
android:layout_marginTop="200dp"
android:layout_marginLeft="150dp"/>


实现的效果

转圈样式的ProgressBar

MainActivity.java

</pre><pre class="html" name="code">  // Request for the progress bar to be shown in the title
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

setContentView(R.layout.activity_main);

// Make sure the progress bar is visible
setProgressBarVisibility(true);


activity_main.xml

<!-- 大样式 -->

<ProgressBar
android:id="@+id/progress_large"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<!-- 默认 -->

<ProgressBar
android:id="@+android:id/progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<!-- 小样式 -->

<ProgressBar
android:id="@+id/progress_small"
style="?android:attr/progressBarStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<!-- 小标题样式 -->

<ProgressBar
android:id="@+id/progress_small_title"
style="?android:attr/progressBarStyleSmallTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />


实现效果

 


(3) 对话框样式的进度

MainActivity.java

private static final int DIALOG1_KEY = 0;
private static final int DIALOG2_KEY = 1;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Button button = (Button) findViewById(R.id.showIndeterminate);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DIALOG1_KEY);
}
});

button = (Button) findViewById(R.id.showIndeterminateNoTitle);
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DIALOG2_KEY);
}
});
}

@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DIALOG1_KEY: {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setTitle("Indeterminate");
dialog.setMessage("Please wait while loading...");
dialog.setIndeterminate(true);//设置转圈的效果
dialog.setCancelable(true);
return dialog;
}
case DIALOG2_KEY: {
ProgressDialog dialog = new ProgressDialog(this);
dialog.setMessage("Please wait while loading...");
dialog.setIndeterminate(true);//设置转圈的效果
dialog.setCancelable(true);
return dialog;
}
}
return null;
}


activity_main.xml

<Button
android:id="@+id/showIndeterminate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/progress_large"
android:layout_marginTop="72dp"
android:layout_toRightOf="@+id/progress_small"
android:text="Button" />

<Button
android:id="@+id/showIndeterminateNoTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/showIndeterminate"
android:layout_alignBottom="@+id/showIndeterminate"
android:layout_alignParentRight="true"
android:layout_marginRight="52dp"
android:text="Button" />


效果图




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