android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity
Calling startActivity() from outside of an Activity
在Activity中使用startActivity()很简单,但是如果是在其他地方(如Widget或Service、BroadcastReceiver中)使用startActivity()方法,就会报错:
android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?
这时就需要为Intent设置一个FLAG_ACTIVITY_NEW_TASK的flag:
Intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
这样就OK了
上图为打开wifi设置界面