android-sample/TestHandler.java at master · huangjunkun/android-sample · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
package com.example.andriodtest;

import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

public class TestHandler implements Runnable {
//	// 一个线程的Looper对象允许给多个不同的Handler对象使用，而且之间相互独立的。示例如下：
//	程序输出：
//	 MyHandler： MSG_ID_ZERO handler1
//	 MyHandler2： MSG_ID_ZERO handler2


	private static final String TAG = "TestHandler";
	private HandlerThread mThread = null;
	private class MyHandler extends Handler {
		private static final String TAG = "MyHandler";
		public static final int MSG_ID_DEFAULT = -1;
		public static final int MSG_ID_ZERO = 0;
		public static final int MSG_ID_ONE = 1;
		public static final int MSG_ID_TWO = 2;
		public static final int MSG_ID_THREE = 3;
		public static final int MSG_ID_FOUR = 4;

		public MyHandler(Looper looper) {
			super(looper);
		}
		@Override
		public void handleMessage(Message msg) {
			// TODO Auto-generated method stub
			switch (msg.what) {
			case MSG_ID_ZERO:
				Log.d(TAG, "MSG_ID_ZERO " + (String)msg.obj);
				break;
			case MSG_ID_ONE:
				Log.d(TAG, "MSG_ID_ONE " + (String)msg.obj);
				break;
			case MSG_ID_TWO:
				Log.d(TAG, "MSG_ID_TWO " + (String)msg.obj);
				break;
			case MSG_ID_THREE:
				Log.d(TAG, "MSG_ID_THREE " + (String)msg.obj);
				break;
			case MSG_ID_FOUR:
				Log.d(TAG, "MSG_ID_FOUR " + (String)msg.obj);
				break;
			default:
				Log.d(TAG, "MSG_ID_DEFAULT " + (String)msg.obj);

			}
			super.handleMessage(msg);
		}
	}

	private class MyHandler2 extends Handler {
		private static final String TAG = "MyHandler2";
		public static final int MSG_ID_DEFAULT = -1;
		public static final int MSG_ID_ZERO = 0;
		public static final int MSG_ID_ONE = 1;
		public static final int MSG_ID_TWO = 2;
		public static final int MSG_ID_THREE = 3;
		public static final int MSG_ID_FOUR = 4;

		public MyHandler2(Looper looper) {
			super(looper);
		}
		@Override
		public void handleMessage(Message msg) {
			// TODO Auto-generated method stub
			switch (msg.what) {
			case MSG_ID_ZERO:
				Log.d(TAG, "MSG_ID_ZERO " + (String)msg.obj);
				break;
			case MSG_ID_ONE:
				Log.d(TAG, "MSG_ID_ONE " + (String)msg.obj);
				break;
			case MSG_ID_TWO:
				Log.d(TAG, "MSG_ID_TWO " + (String)msg.obj);
				break;
			case MSG_ID_THREE:
				Log.d(TAG, "MSG_ID_THREE " + (String)msg.obj);
				break;
			case MSG_ID_FOUR:
				Log.d(TAG, "MSG_ID_FOUR " + (String)msg.obj);
				break;
			default:
				Log.d(TAG, "MSG_ID_DEFAULT " + (String)msg.obj);

			}
			super.handleMessage(msg);
		}
	}

	private Handler mHandler1, mHandler2;
	public void init() {
		mThread = new HandlerThread(TAG);
		mThread.start();
		mHandler1 = new MyHandler(mThread.getLooper());
		mHandler2 = new MyHandler2(mThread.getLooper());
	}

	public void uninit() {
		mThread.getLooper().quit();
		mHandler1 = null;
		mHandler2 = null;
		mThread = null;
	}

	@Override
	public void run() {
		Message msg1 = Message.obtain();
		msg1.what = MyHandler.MSG_ID_ZERO;
		msg1.obj = "handler1";
		mHandler1.sendMessage(msg1);

		Message msg2 = Message.obtain();
		msg2.what = MyHandler.MSG_ID_ZERO;
		msg2.obj = "handler2";
		mHandler2.sendMessage(msg2);
	}

}