Android特效 五种Toast详解

  

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。

1.默认效果:

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

2.自定义显示位置效果:

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

 3.带图片效果:

代码
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.完全自定义效果:

代码
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.其他线程:

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

//调用方法1 
    //Thread th=new Thread(this); 
    //th.start(); 
    //调用方法2 
    handler.post(new Runnable() { 
        @Override 
        public void run() { 
            showToast(); 
        } 
    }); 
 
Java代码
public void showToast(){ 
        Toast toast=Toast.makeText(getApplicationContext(), "Toast在其他线程中调用显示", Toast.LENGTH_SHORT); 
        toast.show(); 
    } 
 
Java代码
Handler handler=new Handler(){ 
        @Override 
        public void handleMessage(Message msg) { 
            int what=msg.what; 
            switch (what) { 
            case 1: 
                showToast(); 
                break; 
            default: 
                break; 
            } 
             
            super.handleMessage(msg); 
        } 
    }; 
 
Java代码
@Override 
    public void run() { 
        handler.sendEmptyMessage(1); 
    }