android之【Toast】

public class ToastTest extends Activity
{
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Button simple = (Button)findViewById(R.id.simple);
    //为按钮的单击事件绑定事件监听器
    simple.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View source)
      {
        //创建一个Toast提示信息
        Toast toast = Toast.makeText(ToastTest.this
          , "简单的提示信息"
          // 设置该Toast提示信息的持续时间
          , Toast.LENGTH_SHORT);
        toast.show();
      }
    });
    Button bn = (Button)findViewById(R.id.bn);
    //为按钮的单击事件绑定事件监听器
    bn.setOnClickListener(new OnClickListener()
    {
      @Override
      public void onClick(View source)
      {
        //创建一个Toast提示信息
        Toast toast = Toast.makeText(ToastTest.this
          , "带图片的的提示信息"
          // 设置该Toast提示信息的持续时间
          , Toast.LENGTH_LONG);       
        toast.setGravity(Gravity.CENTER, 0, 0);
        //获取Toast提示里原有的View
        View toastView = toast.getView();
        //创建一个ImageView
        ImageView image = new ImageView(ToastTest.this);
        image.setImageResource(R.drawable.tools);
        //创建一个LinearLayout容器
        LinearLayout ll = new LinearLayout(ToastTest.this);
        //向LinearLayout中添加图片、原有的View
        ll.addView(image);
        ll.addView(toastView);
        toast.setView(ll);
        toast.show();       
      }
    }); 
  }
}