Android开发便签2：Activity的生命周期

关于Android Activity生命周期的例子

package com.andy.android;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
/**
 * 测试Android Activity 生命周期
 * @author Andy.Zhang
 *
 */
public class TestAndroid extends Activity {
	private static final String TAG = "TestAndroid";
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	Log.i(TAG, "=======onCreate()========");
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

	@Override
	protected void onDestroy()
	{
		Log.i(TAG, "=======onDestroy()========");
		super.onDestroy();
	}

	@Override
	protected void onPause()
	{
		Log.i(TAG, "=======onPause()========");
		super.onPause();
	}

	@Override
	protected void onRestart()
	{
		Log.i(TAG, "=======onRestart()========");
		super.onRestart();
	}

	@Override
	protected void onResume()
	{
		Log.i(TAG, "=======onResume()========");
		super.onResume();
	}

	@Override
	protected void onStart()
	{
		Log.i(TAG, "=======onStart()========");
		super.onStart();
	}

	@Override
	protected void onStop()
	{
		Log.i(TAG, "=======onStop()========");
		super.onStop();
	}
    
    
}

通过在DDMS中查看日志信息：

06-28 02:14:08.760: INFO/TestAndroid(220): =======onCreate()========
06-28 02:14:09.005: INFO/TestAndroid(220): =======onStart()========
06-28 02:14:09.005: INFO/TestAndroid(220): =======onResume()========
06-28 02:14:09.321: INFO/ActivityManager(53): Displayed activity com.andy.android/.TestAndroid: 1687 ms (total 1687 ms)
06-28 02:14:09.641: ERROR/gralloc(53): [unregister] handle 0x497218 still locked (state=40000001)
06-28 02:14:16.840: INFO/ActivityManager(53): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.HOME] flg=0x10200000 cmp=com.android.launcher/.Launcher }
06-28 02:14:16.910: INFO/TestAndroid(220): =======onPause()========
06-28 02:14:17.090: WARN/BluetoothA2dp(116): Bluetooth A2DP service not available!
06-28 02:14:17.803: INFO/TestAndroid(220): =======onStop()========
06-28 02:14:20.141: INFO/ARMAssembler(53): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x4b38c8:0x4b3984] in 849006 ns
06-28 02:14:20.180: INFO/ARMAssembler(53): generated scanline__00000177:03515104_00001001_00000000 [ 91 ipp] (114 ins) at [0x4b3988:0x4b3b50] in 742085 ns
06-28 02:14:21.560: INFO/ActivityManager(53): Starting activity: Intent { flg=0x10100000 cmp=com.andy.android/.TestAndroid }
06-28 02:14:21.611: INFO/TestAndroid(220): =======onRestart()========
06-28 02:14:21.611: INFO/TestAndroid(220): =======onStart()========
06-28 02:14:21.611: INFO/TestAndroid(220): =======onResume()========
06-28 02:15:09.771: WARN/KeyCharacterMap(220): No keyboard for id 0
06-28 02:15:09.771: WARN/KeyCharacterMap(220): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
06-28 02:15:09.911: INFO/TestAndroid(220): =======onPause()========
06-28 02:15:10.450: INFO/TestAndroid(220): =======onStop()========
06-28 02:15:10.450: INFO/TestAndroid(220): =======onDestroy()========