本文是小编为大家收集整理的关于即使手机处于锁定模式，也能显示活动情况的处理/解决方法，可以参考本文帮助大家快速定位并解决问题，中文翻译不准确的可切换到English标签页查看源文。
问题描述
我的问题与这个问题相似 我如何唤醒抬高Android设备并跳过屏幕锁
我想从广播接收器显示一个对话框，但是Android API不允许我这样做，因此我正在使用从那里开始活动并将此活动的主题更改为主题.
现在，即使手机处于锁定模式/睡眠模式，我也希望显示此活动.
屏幕我能够使用以下标志打开BU，但钥匙防护(非安全)我必须手动解锁.我无法在锁定屏幕上看到我的窗户.
区别在于我不使用全屏活动，即
android:theme="@android:style/Theme.Dialog
在我的代码中，我正在使用
Window w = getWindow();
w.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
推荐答案
我无法通过使用这些标志成功实现此功能，但是我确实通过使用 wakelock 和 .以下是我要做的:
public class DismissLock extends Activity {
PowerManager pm;
WakeLock wl;
KeyguardManager km;
KeyguardLock kl;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
Log.i("INFO", "onCreate() in DismissLock");
pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
km=(KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
kl=km.newKeyguardLock("INFO");
wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP|PowerManager.ON_AFTER_RELEASE, "INFO");
wl.acquire(); //wake up the screen
kl.disableKeyguard();// dismiss the keyguard
setContentView(R.layout.main);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
wl.release(); //when the activiy pauses, we should realse the wakelock
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
wl.acquire();//must call this!
}
}
当然，您仍然需要在清单文件中声明许可.
<uses-permission android:name="android.permission.WAKE_LOCK"/> <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
问题描述
My Question is similar to this one How can I wake an android device up and skip the screenlock
I want to display a dialogue box from broadcast receiver, but Android API is not allowing me to do that therefore I am using starting an activity from there and changing the theme of this activity to Theme.
Now I want this activity to be displayed even when phone is in locked mode/ sleep mode.
Screen I am able to turn on bu using below flags but Key Guard (Non Secured) I have to unlock manually. I am not able to see my window over locked screen.
The difference is that I am not using a full screen Activity i.e.
android:theme="@android:style/Theme.Dialog
in my code I am using
Window w = getWindow();
w.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON |
WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON);
推荐答案
I don't succeed in achieving this feature by using these Flags, but I did succeed by using the WakeLock and KeyguardLock. Below is what I do:
public class DismissLock extends Activity {
PowerManager pm;
WakeLock wl;
KeyguardManager km;
KeyguardLock kl;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
Log.i("INFO", "onCreate() in DismissLock");
pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
km=(KeyguardManager)getSystemService(Context.KEYGUARD_SERVICE);
kl=km.newKeyguardLock("INFO");
wl = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP|PowerManager.ON_AFTER_RELEASE, "INFO");
wl.acquire(); //wake up the screen
kl.disableKeyguard();// dismiss the keyguard
setContentView(R.layout.main);
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
wl.release(); //when the activiy pauses, we should realse the wakelock
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
wl.acquire();//must call this!
}
}
Of course, you still need to declare the permission in the manifest file.
<uses-permission android:name="android.permission.WAKE_LOCK"/> <uses-permission android:name="android.permission.DISABLE_KEYGUARD"/>
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