Android在子线程中更新UI的方法汇总(共七种)

1、常规写法：new Handler()的handleMessage()和handler.sendMessage(msg)

Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
        }
    };

new Thread(new Runnable() {
            @Override
            public void run() {
                Message msg = Message.obtain();
                msg.what = 1000;
                msg.arg1 = 10;
                handler.sendMessage(msg);
            }
        }).start();

2、handler的另一种用法：

private Handler.Callback callback = new Handler.Callback() {
        @Override
        public boolean handleMessage(Message msg) {
            return true;
        }
    };
    
    Handler handler1 = new Handler(callback);
        new Thread(new Runnable() {
            @Override
            public void run() {
                Message msg = Message.obtain();
                msg.what = 1001;
                msg.arg1 = 11;
                handler1.sendMessage(msg);
            }
        }).start();

3、handler.post(runnable)

 Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
        }
    };

new Thread(new Runnable() {
            @Override
            public void run() {
                handler.post(new Runnable() {
                    @Override
                    public void run() {

                    }
                });
            }
        }).start();

4、handler.postDelayed(runnable, milliseconds)

    Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
        }
    };
        new Thread(new Runnable() {
            @Override
            public void run() {
                handler.postDelayed(new Runnable() {
                    @Override
                    public void run() {

                    }
                }, 3000);
            }
        }).start();

5、activity.runOnUiThread(runnable)

        new Thread(new Runnable() {
            @Override
            public void run() {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {

                    }
                });
            }
        }).start();

6、view.post(runnable)

        new Thread(new Runnable() {
            @Override
            public void run() {
                button.post(new Runnable() {
                    @Override
                    public void run() {

                    }
                });
            }
        }).start();

7、view.postDelayed(runnable, milliseconds)

        new Thread(new Runnable() {
            @Override
            public void run() {
                button.postDelayed(new Runnable() {
                    @Override
                    public void run() {

                    }
                }, 3000);
            }
        }).start();

来源：https://developer.aliyun.com/article/1129904?accounttraceid=db133b5236304694ab7ccf7761943a2dapdr