第一步,新建一个Activity,作为1像素页面的主体,我姑且叫它HooliganActivity:
public class HooliganActivity extends Activity { private static final String TAG = "HooliganActivity"; private static HooliganActivity instance; /** * 开启保活页面 */ public static void startHooligan() { Log.d(TAG, "startHooligan: 开启保活页面"); Intent intent = new Intent(My_Application.getContext(), HooliganActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); My_Application.getContext().startActivity(intent); } /** * 关闭保活页面 */ public static void killHooligan() { Log.d(TAG, "killHooligan: 关闭保活页面"); if (instance != null) { instance.finish(); } } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); instance = this; Window window = getWindow(); window.setGravity(Gravity.LEFT | Gravity.TOP); WindowManager.LayoutParams params = window.getAttributes(); params.x = 0; params.y = 0; params.height = 1; params.width = 1; window.setAttributes(params); } @Override protected void onDestroy() { super.onDestroy(); instance = null; } }
第二步,注册清单文件:
<activity android:name=".view.HooliganActivity" android:configChanges="keyboardHidden|orientation|screenSize|navigation|keyboard" android:excludeFromRecents="true" android:exported="false" android:finishOnTaskLaunch="false" android:launchMode="singleInstance" android:theme="@style/HooliganActivityStyle" />
<style name="HooliganActivityStyle"> <item name="android:windowBackground">@color/transparent</item> <item name="android:windowContentOverlay">@null</item> <item name="android:windowIsTranslucent">true</item> <item name="android:windowNoDisplay">false</item> <item name="android:windowDisablePreview">true</item> </style>
<!--安卓全透明颜色--> <color name="transparent">#00000000</color>
第三步,监听锁屏和解锁通知,不能静态注册广播,只能动态注册:【可以放在MainActivity、BaseActivity、或者是SplashActivity中】
IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_SCREEN_ON); filter.addAction(Intent.ACTION_SCREEN_OFF); registerReceiver(new BootCompleteReceiver(), filter);
第四步,分别在解锁和锁屏时唤醒我的HooliganActivity:
/** * Created by 柱子 on 2018/04/13 */ public class NetBroadcastReceiver extends BroadcastReceiver { public NetEvevt netEvevt = BaseActivity.evevt; @Override public void onReceive(Context context, Intent intent) { Log.e("eeee", "onReceive: "); if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { HooliganActivity.startHooligan(); } else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) { HooliganActivity.killHooligan(); } } }这样你在后台每次锁屏,实际上都会吊起一个一像素的页面,假装app在前台,拥有最高进程优先级。