# Handler

**Repository Path**: HackerX9/Handler

## Basic Information

- **Project Name**: Handler
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2017-11-06
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# Handler
## handlerFuns
```
public class HandlerFuns {
    private Handler mHandler;

    public void funZero() {
        mHandler.sendEmptyMessage(0);
        Handler handler = new Handler();
        handler.post(new Runnable() {
            @Override
            public void run() {

            }
        });
        handler.postAtTime(new Runnable() {
            @Override
            public void run() {

            }
        }, 66666);
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {

            }
        }, 88888);


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

    public void funOne() {
        Message message = new Message();
        message.what = 0;
        message.obj = "we will go";
        message.arg1 = 666;
        message.arg2 = 888;
        mHandler.sendMessage(message);
    }

    public void funTwo() {
        Message message = Message.obtain();
        message.what = 0;
        message.obj = "we will go";
        message.arg1 = 666;
        message.arg2 = 888;
        mHandler.sendMessageAtTime(message, 6666);
    }

    public void funThree() {
        Message message = mHandler.obtainMessage();
        message.what = 0;
        message.obj = "we will go";
        message.arg1 = 666;
        message.arg2 = 888;
        message.sendToTarget();
    }

    public void funFour() {
        Message message = Message.obtain();
        message.what = 0;
        message.obj = "we will go";
        message.arg1 = 666;
        message.arg2 = 888;
        message.setTarget(mHandler);
        message.sendToTarget();
    }
}
```
## perfectHandler
```
public static class PerfectHandler extends Handler {
    private final WeakReference<Activity> mReferences;

    public PerfectHandler(Activity activity) {
        mReferences = new WeakReference<Activity>(activity);
    }

    @Override
    public void handleMessage(Message msg) {
        Activity activity = mReferences.get();
        if (activity != null && msg.what == 0) {

        }
    }
}
```
## LooperThread
```
class LooperThread extends Thread {
        @Override
        public void run() {
            Looper.prepare();
            mHandler = new Handler() {
                @Override
                public void handleMessage(Message msg) {
                    super.handleMessage(msg);
                    if (msg.what == 0) {
                        Log.i("MainActivity", "---handleMessage()--->" + msg.obj);
                    }
                }
            };
            Looper.loop();
        }
    }
```