1.判斷程序是否存在

//判斷是否在主程序,這個方法判斷程序名或者pid都可以,如果程序名一樣那pid肯定也一樣
//true:當前程序是主程序 false:當前程序不是主程序
public boolean isUIProcess() {
 ActivityManager am = ((ActivityManager) getSystemService(Context.ACTIVITY_SERVICE));
 List<ActivityManager.RunningAppProcessInfo> processInfos = am.getRunningAppProcesses();
 String mainProcessName = getPackageName();
 int myPid = android.os.Process.myPid();
 for (ActivityManager.RunningAppProcessInfo info : processInfos) {
  if (info.pid == myPid && mainProcessName.equals(info.processName)) {
   return true;
  }
 }
 return false;
}
 

2.判斷服務是否存在

/**
 * 判斷service是否已經執行
 * 必須判斷uid,因為可能有重名的Service,所以要找自己程式的Service,不同程序只要是同一個程式就是同一個uid,個人理解android系統中一個程式就是一個使用者
 * 用pid替換uid進行判斷強烈不建議,因為如果是遠端Service的話,主程序的pid和遠端Service的pid不是一個值,在主程序呼叫該方法會導致Service即使已經執行也會認為沒有執行
 * 如果Service和主程序是一個程序的話,用pid不會出錯,但是這種方法強烈不建議,如果你後來把Service改成了遠端Service,這時候判斷就出錯了
 *
 * @param className Service的全名,例如PushService.class.getName()
 * @return true:Service已執行 false:Service未執行
 */

public boolean isServiceExisted(String className) {
 ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
 List<ActivityManager.RunningServiceInfo> serviceList = am.getRunningServices(Integer.MAX_VALUE);
 int myUid = android.os.Process.myUid();
 for (ActivityManager.RunningServiceInfo runningServiceInfo : serviceList) {
  if (runningServiceInfo.uid == myUid && runningServiceInfo.service.getClassName().equals(className)) {
   return true;
  }
 }
 return false;
}
 

3.app是否在前臺

是否在前臺
 private boolean isAppForeground(String packageName) {
        ActivityManager am = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        ComponentName cn = am.getRunningTasks(1).get(0).topActivity;
        String currentPackageName = cn.getPackageName();
        if (!TextUtils.isEmpty(currentPackageName) && currentPackageName.equals(packageName)) {
            return true;
        }

        return false;
    }

把應用置為前臺
moveTaskToFront() 
moveTaskToBack()

 private void bring2Front() {
        ActivityManager activtyManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        List<ActivityManager.RunningTaskInfo> runningTaskInfos = activtyManager.getRunningTasks(3);
        for (ActivityManager.RunningTaskInfo runningTaskInfo : runningTaskInfos) {
            if (this.getPackageName().equals(runningTaskInfo.topActivity.getPackageName())) {
                activtyManager.moveTaskToFront(runningTaskInfo.id, ActivityManager.MOVE_TASK_WITH_HOME);
                return;
            }
        }
    }

回到系統桌面
private void back2Home() {
        Intent home = new Intent(Intent.ACTION_MAIN);

        home.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        home.addCategory(Intent.CATEGORY_HOME);

        startActivity(home);
    }
 

4.手機鎖

系統是否在鎖屏狀態
 private boolean isScreenLocked() {
        KeyguardManager keyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
        return keyguardManager.inKeyguardRestrictedInputMode();
    }
private void wakeAndUnlock() {
        //獲取電源管理器物件
        PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);

        //獲取PowerManager.WakeLock物件，後面的引數|表示同時傳入兩個值，最後的是除錯用的Tag
        PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.SCREEN_BRIGHT_WAKE_LOCK, "bright");

        //點亮螢幕
        wl.acquire(1000);

        //得到鍵盤鎖管理器物件
        KeyguardManager km = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);
        kl = km.newKeyguardLock("unLock");

        //解鎖
        kl.disableKeyguard();

    }

 private void release() {
        if (locked && kl != null) {
            android.util.Log.d("maptrix", "release the lock");
            //得到鍵盤鎖管理器物件
            kl.reenableKeyguard();
            locked = false;
        }
    }

5.系統app

參考

參考
public void onclick(View view) {

        DataOutputStream dataOutputStream = null;


        BufferedReader err = null;

        try {

            //得到su許可權
            Process process = Runtime.getRuntime().exec("su root");
            //輸出命令
            dataOutputStream = new DataOutputStream(process.getOutputStream());
            //獲取外部sd路徑
            File externalStorageDirectory = Environment.getExternalStorageDirectory();
            //得到apk檔案路徑
            File apkFile = new File(externalStorageDirectory.getAbsoluteFile()+File.separator+"youjiayou.apk");
            //移動檔案命令
            String command = "cp  " + apkFile.getAbsolutePath() + " system/app\n";
            //掛載為system可寫 不然無法寫入檔案 = = 這些坑我是一點點 踩過的
            dataOutputStream.writeBytes("mount -o remount rw /system\n");
            //輸出命令
            dataOutputStream.write(command.getBytes("UTF-8"));
            //掛載為可寫不然無法生效
            dataOutputStream.writeBytes("chmod 777 /system/app/youjiayou.apk\n");
            //掛載為可讀
            dataOutputStream.writeBytes("mount -o remount ro /system\n");

            //重新整理輸出
            dataOutputStream.flush();
            //重啟
            dataOutputStream.writeBytes("reboot\n");
            //退出
            dataOutputStream.writeBytes("exit\n");
            //重新整理輸出
            dataOutputStream.flush();
            //等候命令結束
            process.waitFor();

            String line;

            String msg = "";

            //讀取控制檯返回的資料
            err = new BufferedReader(new InputStreamReader(process.getInputStream()));

            //讀取資料
            while ((line = err.readLine()) != null) {
                msg += line;
            }

            Log.e("Fmy", "結果 " +msg);

        } catch (Exception e) {
//          e.printStackTrace();

            Log.e("Fmy", "發生異常" + e.getMessage());
        } finally {
            try {
                if (dataOutputStream != null) {
                    dataOutputStream.close();
                }

                if (err != null) {
                    err.close();
                }

            } catch (IOException e) {
                e.printStackTrace();
            }
        }


    }