我在做一个应用程序，它必须告诉我在我开始对设备的应用程序日志。我用 logcat的ActivityManager：我*：•，它这样做很好..一些设备和仿真

I'm making an application, which must show me in logs which applications I start on device. I use logcat ActivityManager:I *:S and it doing this well.. at some devices and emulators.

但在某些设备上有奇怪的行为 - 的一切，我在日志中看到的是重复：

But at some devices it has strange behavior - everything I see in log is repetition of:

02-18 16：32：09.132：D / LockApp（4082）：---------开始的/ dev /日志/主

code片断：

Process process = null;
try {
    process = Runtime.getRuntime().exec("logcat -c");
    process = null;
    process = Runtime.getRuntime().exec("logcat ActivityManager:I *:S");
    br = new BufferedReader(new InputStreamReader(process.getInputStream()));
    String line = null;

    line = br.readLine();

    while( line != null && !this.isInterrupted()){
        Log.d(Tag, "Start LockApp loop");
        Log.d(Tag, line);
    }
} catch (IOException e) {
    Log.d(Tag, e.toString());
}

和我有 android.permission.READ_LOGS 在清单

我真的做在Android的4.1和4.2

I`m doing it in Android 4.1 and 4.2

推荐答案

这是什么的logcat -c >这将清除（刷新）整个日志并退出。

What is this logcat -c> this will Clears (flushes) the entire log and exits.

有只 V，D，I，W，E＆安培; WTF :-)六型logcat的分类

There are only V,D,I,W,E & WTF :-) Six type of logcat category

将其更改为调用Runtime.getRuntime（）EXEC（logcat的-e）; 链接在这里：

编辑： 有一个在读的果冻豆的问题 链接这里

There is an problem in Reading in jelly bean link here

READ_LOGS上糖豆（安卓4.1）的权限将不会被授予了正常的应用程序。

READ_LOGS permission on Jelly Beans (Android 4.1) will not be granted anymore to normal apps.

应用程序只允许读自己的日志。

Apps are only allow to read their own logs.

有关详情，请信息

您可以尝试实现一个功能，授予自己READ_LOGS权限与用户root权限的设备。

You could try to implement a function to grant yourself READ_LOGS permission with for users with rooted devices.