Handler与Message

/**  //第一种方式
Message message = Message.obtain();
message.what = 1;
message.arg1 = 2;
message.arg2 = 3;
message.obj = "jack";
handler.sendMessage(message);
*/
/**第二种方式
Message message = Message.obtain(handler);
message.what = 1;
message.arg1 = 2;
message.arg2 = 3;
message.obj = "jack";
message.sendToTarget();
**/
/**第三种方式
Message message = Message.obtain(handler, 33);
message.arg1 = 1;
message.arg2 = 2;
message.obj = "rose";
message.sendToTarget();
**/
/**第四种方式
Message message = Message.obtain(handler, 2, "tom");
message.sendToTarget();
**/
/**第五种方式
Message message = Message.obtain(handler, 0, 1, 2, "hello");
message.setData(data);
message.sendToTarget();
**/