记Android开发中的Toast详解

Toast是android一种显示消息的机制，没有焦点，可设定时间限制，过一定时间就会自动消失。其主要功能就是为用户显示提示信息。

1、默认效果：

Toast.makeText(getApplicationContext(),text:"默认效果显示内容",Toast.LENGTH_LONG).show()

2、自定义显示位置效果：

Toast.makeText(getApplicationContext(),text:"自定义效果显示位置内容",Toast.LENGTH_LONG)；
Toast.setGravity(Gravity.CENTER,0,0);
Toast.show();

3、带图片效果：

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：

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、线程效果：

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