高级控件

信息提示框
在单击事件中：

1 public void onClick(View v) {
2                 Toast.makeText(本类名.this, "提示语", Toast.LENGTH_LONG).show();
3                     //长时间显示的提示框（LENGTH_SHORT（短时间））
4     }

View Code

警告框（AlertDialog）

1 Dialog ad = new AlertDialog.Builder(本类名.this)
2         .setTitle("警告")        //显示标题
3         .setIcon(R.drawable.icon1)    //drawable的id
4         .setMessage("吸烟有害身体健康")    //显示信息
5         .create();            //创建Dialog
6 ad.show();

View Code

对话框退出

 1 Dialog ad = new AlertDialog.Builder(Tishi.this)
 2     .setTitle("程序退出")
 3     .setIcon(R.drawable.icon1)
 4     .setMessage("您确定要退出本程序吗？")
 5     .setPositiveButton("确定",new DialogInterface.OnClickListener() {
 6         public void onClick(DialogInterface dialog, int which) {
 7             Tishi.this.finish();//退出程序
 8         }
 9     })
10     .setNegativeButton("取消",new DialogInterface.OnClickListener() {
11         public void onClick(DialogInterface dialog, int which) {
12                                     
13         }
14     })
15     .setNeutralButton("查看详情",new DialogInterface.OnClickListener() {
16         public void onClick(DialogInterface dialog, int which) {
17                                     
18         }
19     })
20     .create();

View Code

手机按返回键退出

 1 public boolean onKeyDown(int keyCode, KeyEvent event) {
 2     if(keyCode == KeyEvent.KEYCODE_BACK){//判断是否是返回键
 3         AlertDialog isExit = new AlertDialog.Builder(this)
 4             .setTitle("系统提示")
 5             .setMessage("确定要退出吗")
 6             .setPositiveButton("确定",new DialogInterface.OnClickListener() {
 7                 public void onClick(DialogInterface dialog, int which) {
 8                     Tishi.this.finish();
 9                 }
10             })
11             .setNegativeButton("取消",new DialogInterface.OnClickListener() {
12                 public void onClick(DialogInterface dialog, int which) {
13                     
14                 }
15             })
16             .create(); 
17         isExit.show();
18     }
19     return false;
20 }

View Code

进度处理对话框

 1 public void onClick(View v) {
 2     final ProgressDialog proDig = ProgressDialog.show(Jindu.this,"搜索网络","请等待....");
 3         new Thread(){//线程对象
 4             public void run(){//线程主体
 5                 try {
 6                     Thread.sleep(3000);//运行3秒后关闭对话框
 7                 } catch (Exception e) {
 8                 } finally{
 9                     proDig.dismiss();//关闭对话框
10                 }
11             }
12         }.start();
13         proDig.show();
14 }

View Code

拖动条(SeekBar)

1 <SeekBar
2       android:id="@+id/seekbar"
3       android:layout_width="fill_parent"
4       android:layout_height="wrap_content"
5 />

View Code

 1 sk.setProgress(80);//设置默认位置
 2 sk.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
 3     public void onStopTrackingTouch(SeekBar seekBar) {
 4         Jindu.this.tv.append("*** 停止拖动,当前值:"+seekBar.getProgress()+"
");
 5     }
 6     public void onStartTrackingTouch(SeekBar seekBar) {
 7         Jindu.this.tv.append("*** 开始拖动,当前值:"+seekBar.getProgress()+"
");
 8     }
 9     public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
10         Jindu.this.tv.append("*** 正在拖动,当前值:"+seekBar.getProgress()+"
");
11     }
12 });

View Code

滚动条视图（ScrollView）

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <ScrollView
 3   xmlns:android="http://schemas.android.com/apk/res/android"
 4   android:layout_width="fill_parent"
 5   android:layout_height="100dp">
 6   <LinearLayout
 7       android:layout_width="wrap_content"
 8       android:layout_height="wrap_content"
 9       android:orientation="vertical"
10   >
11       <TextView
12           android:layout_width="fill_parent"
13           android:layout_height="wrap_content"
14           android:layout_marginTop="50dp"
15           android:text="@string/hello"
16       />
17       <TextView
18           android:layout_width="fill_parent"
19           android:layout_height="wrap_content"
20           android:layout_marginTop="50dp"
21           android:text="@string/hello"/>
22       <TextView
23           android:layout_width="fill_parent"
24           android:layout_height="wrap_content"
25           android:layout_marginTop="50dp"
26           android:text="@string/hello"/>
27   </LinearLayout>
28 </ScrollView>

View Code