Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want？
安卓出现如下错误，需要增加FLAG_ACTIVITY_NEW_TASK标志
Intent intent1 = new Intent(getApplicationContext(), CameraActivity.class);
intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
startActivity(intent1);
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