通过一个应用锁定所有应用程序

Question

我正在创建一个应用程序，通过键或模式锁锁定所有其他手机应用程序 但它不适用于4.0或更高版本

以下是调用块活动的代码，但它不是在4.0中调用..

   try {
            Process process;
            process = Runtime.getRuntime().exec(ClearLogCatCommand);
            process = Runtime.getRuntime().exec(LogCatCommand);
            br = new BufferedReader(new InputStreamReader(process.getInputStream()));
            String line;
            // Check if it matches the pattern
            while(((line=br.readLine()) != null) && !this.isInterrupted()){

                Log.d("Detector", "RUN"+line);

                // Ignore launchers
                if (line.contains("cat=[" + Intent.CATEGORY_HOME + "]")) continue;

                Matcher m = ActivityNamePattern.matcher(line);
                //Log.d("Detector","match"+m);
                if (!m.find()) continue;
                //Log.d("Detector","continue"+m);
                if (m.groupCount()<2){
                    // Log.d("Detector", "Unknown problem while matching logcat output. Might be SDK version?");
                    //Log.d("Detector","group"+m);
                    continue;
                    }

                if (mListener!=null) mListener.onActivityStarting(m.group(1), m.group(2));

                Log.i("Detector", "Found activity launching: " + m.group(1) + "  /   " + m.group(2));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }