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
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。
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new Thread(new Runnable() {
public void run() {
showToast();
}
}).start();
3.Progressbar
(1) 带有进度条的 ProgressBar
MainActivity.java
activity_main.xml
实现的效果
转圈样式的ProgressBar
MainActivity.java
activity_main.xml
实现效果
(3) 对话框样式的进度
MainActivity.java
activity_main.xml
效果图
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();
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toast = Toast.makeText(getApplicationContext(), "自定义位置Toast", Toast.LENGTH_LONG); toast.setGravity(Gravity.CENTER, 0, 0); toast.show();
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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();
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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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