android手机管家锁住其它APP,发现有点流氓,后台一个线程在不停的运行

大致的核心代码如下:起时在service中启动这个类,但做测试为图个方便直接在Activity中启动

package com.example.testsafe;import android.content.Context;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;public class ApkInfo extends ApplicationInfo{private String appname;private String pname;private String versionName;private int versionCode;private PackageInfo packageInfo;public static ApkInfo getInfoFromPackageName(String pkgName,Context mContext) {ApkInfo newInfo = new ApkInfo();try {PackageInfo p = mContext.getPackageManager().getPackageInfo(pkgName, PackageManager.GET_PERMISSIONS);newInfo.appname = p.applicationInfo.loadLabel(mContext.getPackageManager()).toString();newInfo.pname = p.packageName;newInfo.versionName = p.versionName;newInfo.versionCode = p.versionCode;newInfo.setPackageInfo(p);} catch (NameNotFoundException e) {e.printStackTrace();return null;}return newInfo;}public String getAppname() {return appname;}public void setAppname(String appname) {this.appname = appname;}public String getPname() {return pname;}public void setPname(String pname) {this.pname = pname;}public String getVersionName() {return versionName;}public void setVersionName(String versionName) {this.versionName = versionName;}public int getVersionCode() {return versionCode;}public void setVersionCode(int versionCode) {this.versionCode = versionCode;}public PackageInfo getPackageInfo() {return packageInfo;}public void setPackageInfo(PackageInfo packageInfo) {this.packageInfo = packageInfo;}}

package com.example.testsafe; import java.util.List; import java.util.Timer; import java.util.TimerTask; import android.app.ActivityManager; import android.app.ActivityManager.RunningAppProcessInfo; import android.content.Context; import android.content.Intent; import android.content.pm.ApplicationInfo; public class Safe { String lastFrontAppPkg = null; public void test(final Context mContext){ Timer timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { @Override public void run() {   ActivityManager activityManager = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);           List<RunningAppProcessInfo> appProcesses= activityManager.getRunningAppProcesses();        for (RunningAppProcessInfo appProcess : appProcesses) {            try {            if (appProcess.importance == RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {            if (!lastFrontAppPkg.equals((String) appProcess.pkgList[0])) {             ApkInfo apkInfo = ApkInfo.getInfoFromPackageName(appProcess.pkgList[0], mContext);                if (apkInfo == null || (apkInfo.getPackageInfo().applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 1) {                  // System app                                                             continue;                        } else if (((apkInfo.getPackageInfo().versionName == null)) || (apkInfo.getPackageInfo().requestedPermissions == null)) {                    //Application that comes preloaded with the device                        continue;                     } else {                     lastFrontAppPkg = (String) appProcess.pkgList[0];                     } //kill the app //Here do the pupop with password to launch the lastFrontAppPkg if the pass is correct if(lastFrontAppPkg.equals(mContext.getPackageName())){ Intent intent = new Intent(mContext, MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); mContext.startActivity(intent); }            }  }                 } catch (Exception e) {                  //e.printStackTrace();                }        }   } }, 0, 100); } }