Android 弹出通知Toast的使用

//官方帮助文档：http://wear.techbrood.com/guide/topics/ui/notifiers/toasts.html

	private Button btnShowShort;
	private Button btnShowLong;
	private Button btnShowDiy;
	private Button btnShowImage;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        btnShowShort=(Button) findViewById(R.id.btnShowShort);
        btnShowShort.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast.makeText(MainActivity.this, "show short",Toast.LENGTH_SHORT).show();
			}
		});
        
        btnShowLong=(Button) findViewById(R.id.btnShowLong);
        btnShowLong.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast.makeText(MainActivity.this, "show long",Toast.LENGTH_LONG).show();
			}
		});
        
        btnShowDiy=(Button) findViewById(R.id.btnShowDiy);
        btnShowDiy.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast toast=Toast.makeText(MainActivity.this, "show diy",Toast.LENGTH_LONG);
				toast.setGravity(Gravity.CENTER, 100, 100);
				toast.show();
			}
		});
        
        btnShowImage=(Button) findViewById(R.id.btnShowImage);
        btnShowImage.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast toast=Toast.makeText(MainActivity.this, "show long",Toast.LENGTH_LONG);
				ImageView image=new ImageView(MainActivity.this);
				image.setImageResource(R.drawable.cool);
				toast.setView(image);
				toast.show();
			}
		});
    }

效果：