解决Content的startActivity方法报错

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最新推荐文章于 2026-07-02 09:00:00 发布 622 阅读 AI 写同款· GEO 优化 ›

Android 2.3.3     
Eclipse Version: 3.7.0     
LogCat

BootBroadcastReceiver继承自android.content.BroadcastReceiver，处理广播事件，部分代码如下：

	public void onReceive(Context context, Intent intent) {
		……
		Intent startIPhone = new Intent(context, Iphone.class);
		context.startActivity(startIPhone);
		……
	}

LogCat 报错信息：

02-10 13:26:11.017: DEBUG/AndroidRuntime(17173): Shutting down VM
02-10 13:26:11.017: WARN/dalvikvm(17173): threadid=1: thread exiting with uncaught exception (group=0x40015560)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): FATAL EXCEPTION: main
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): java.lang.RuntimeException: Unable to start receiver com.tmall.htc.BootBroadcastReceiver: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.handleReceiver(ActivityThread.java:1805)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.access$2400(ActivityThread.java:117)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:981)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.os.Handler.dispatchMessage(Handler.java:99)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.os.Looper.loop(Looper.java:123)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.main(ActivityThread.java:3683)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at java.lang.reflect.Method.invokeNative(Native Method)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at java.lang.reflect.Method.invoke(Method.java:507)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at dalvik.system.NativeStart.main(Native Method)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): Caused by: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ContextImpl.startActivity(ContextImpl.java:621)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.content.ContextWrapper.startActivity(ContextWrapper.java:258)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.content.ContextWrapper.startActivity(ContextWrapper.java:258)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at com.tmall.htc.BootBroadcastReceiver.onReceive(BootBroadcastReceiver.java:64)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): at android.app.ActivityThread.handleReceiver(ActivityThread.java:1794)
02-10 13:26:11.048: ERROR/AndroidRuntime(17173): ... 10 more
02-10 13:26:11.078: WARN/ActivityManager(68): Force finishing activity com.tmall.htc/.Iphone

发生错误原因分析：

主要原因是

02-10 13:26:11.048: ERROR/AndroidRuntime(17173): Caused by: android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?

Content的startActivity方法，需要开启一个新的task。

如果使用 Activity的startActivity方法，不会有任何限制，因为Activity继承自Context，已重载了startActivity方法。

解决办法：

按照错误提示，添加一个FLAG_ACTIVITY_NEW_TASK flag

	public void onReceive(Context context, Intent intent) {
		……
		Intent startiPhone = new Intent(context, Iphone.class);
		startiPhone.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
		context.startActivity(startiPhone);
		……
	}

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