[移动开发]Android：处理加载页面卡顿问题

?遇到这个情况是在电视机加载的时候出现的问题，加载第一个页面后，就卡住了，但是操作遥控器都可以让他进入下一页，后来就考虑了一下，模拟按键不就行了，依托这个，我就尝试用adb来模拟，就得出如下方法

    private void setTimer() {
        timer = new Timer();
        if (timer != null) {
            timer.schedule(new TimerTask() {
                @Override
                public void run() {
                    execByRuntime("input keyevent 21");
                    Log.e("titansys", "处理卡顿问题");
                }
            }, 8000);
        }
    }

    /**
     * 执行shell 命令， 命令中不必再带 adb shell
     *
     * @param cmd
     * @return Sting  命令执行在控制台输出的结果
     */
    public static String execByRuntime(String cmd) {
        Process process = null;
        BufferedReader bufferedReader = null;
        InputStreamReader inputStreamReader = null;
        try {
            process = Runtime.getRuntime().exec(cmd);
            inputStreamReader = new InputStreamReader(process.getInputStream());
            bufferedReader = new BufferedReader(inputStreamReader);

            int read;
            char[] buffer = new char[4096];
            StringBuilder output = new StringBuilder();
            while ((read = bufferedReader.read(buffer)) > 0) {
                output.append(buffer, 0, read);
            }
            return output.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        } finally {
            if (null != inputStreamReader) {
                try {
                    inputStreamReader.close();
                } catch (Throwable t) {
                    //
                }
            }
            if (null != bufferedReader) {
                try {
                    bufferedReader.close();
                } catch (Throwable t) {
                    //
                }
            }
            if (null != process) {
                try {
                    process.destroy();
                } catch (Throwable t) {
                    //
                }
            }
        }
    }