Kill App on Long-Press Back Key (framework) (a6c200be) · Commits · e / os / android_frameworks_base

core/java/android/provider/Settings.java

+6 −0

Original line number	Diff line number	Diff line
		@@ -4069,6 +4069,12 @@ public final class Settings {
		*/
		public static final String ANR_SHOW_BACKGROUND = "anr_show_background";

		/**
		* Whether to allow killing of the foreground app by long-pressing the Back button
		* @hide
		*/
		public static final String KILL_APP_LONGPRESS_BACK = "kill_app_longpress_back";

		/**
		* The {@link ComponentName} string of the service to be used as the voice recognition
		* service.

policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

+36 −0

Original line number	Diff line number	Diff line
		@@ -18,6 +18,7 @@ package com.android.internal.policy.impl;

		import android.app.Activity;
		import android.app.ActivityManagerNative;
		import android.app.ActivityManager.RunningAppProcessInfo;
		import android.app.IActivityManager;
		import android.app.IUiModeManager;
		import android.app.ProgressDialog;
		@@ -48,6 +49,7 @@ import android.os.LocalPowerManager;
		import android.os.Message;
		import android.os.Messenger;
		import android.os.PowerManager;
		import android.os.Process;
		import android.os.RemoteException;
		import android.os.ServiceManager;
		import android.os.SystemClock;
		@@ -142,6 +144,7 @@ import java.io.FileReader;
		import java.io.IOException;
		import java.io.PrintWriter;
		import java.util.ArrayList;
		import java.util.List;

		/**
		* WindowManagerPolicy implementation for the Android phone UI. This
		@@ -660,6 +663,28 @@ public class PhoneWindowManager implements WindowManagerPolicy {
		}
		};

		Runnable mBackLongPress = new Runnable() {
		public void run() {
		try {
		IActivityManager mgr = ActivityManagerNative.getDefault();
		List<RunningAppProcessInfo> apps = mgr.getRunningAppProcesses();
		for (RunningAppProcessInfo appInfo : apps) {
		int uid = appInfo.uid;
		// Make sure it's a foreground user application (not system,
		// root, phone, etc.)
		if (uid >= Process.FIRST_APPLICATION_UID && uid <= Process.LAST_APPLICATION_UID
		&& appInfo.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
		// Kill the entire pid
		Process.killProcess(appInfo.pid);
		break;
		}
		}
		} catch (RemoteException remoteException) {
		// Do nothing; just let it go.
		}
		}
		};

		void showGlobalActionsDialog() {
		if (mGlobalActions == null) {
		mGlobalActions = new GlobalActions(mContext);
		@@ -1520,6 +1545,10 @@ public class PhoneWindowManager implements WindowManagerPolicy {
		}
		}

		if (keyCode == KeyEvent.KEYCODE_BACK && !down) {
		mHandler.removeCallbacks(mBackLongPress);
		}

		// First we always handle the home key here, so applications
		// can never break it, although if keyguard is on, we do let
		// it handle it, because that gives us the correct 5 second
		@@ -1628,6 +1657,13 @@ public class PhoneWindowManager implements WindowManagerPolicy {
		showOrHideRecentAppsDialog(RECENT_APPS_BEHAVIOR_SHOW_OR_DISMISS);
		}
		return -1;
		} else if (keyCode == KeyEvent.KEYCODE_BACK) {
		if (Settings.Secure.getInt(mContext.getContentResolver(),
		Settings.Secure.KILL_APP_LONGPRESS_BACK, 0) == 1) {
		if (down && repeatCount == 0) {
		mHandler.postDelayed(mBackLongPress, 2000);
		}
		}
		}

		// Shortcuts are invoked through Search+key, so intercept those here