android app 抓取log日誌

之前想寫個app來過濾log，有通過service來啓動，也試過重定向到sdcard，但是總是得不到想要的結果，打印的只是本進程的一些log，後來想到通過AIDL去啓動，沒想到真的可以打印全局log。下面分享下簡單的步驟：

1、定義aidl接口

interface ILogactService {
    /**
     * Demonstrates some basic types that you can use as parameters
     * and return values in AIDL.
     */
    void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat,
            double aDouble, String aString);

   void startlocat();
}

2、寫個service，來啓動過濾log的服務，至於commands，可以按照自己的需求自己定義，我過濾的是E級

public class LogcatService extends Service{
    private IBinder binder = new LogCatBinder();
    String resultpath;
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Log.e("scripttool", "onBind success");
        return binder;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        return super.onStartCommand(intent, flags, startId);
    }


    public void logcat() throws IOException {
        SharedPreferences sp = getSharedPreferences("logcatpath", Activity.MODE_PRIVATE);
        resultpath = sp.getString("resultpath", "");
                Log.e("scripttool","startlogcat");
                Log.e("scripttool", resultpath);
                String[] commands = {"logcat -c ", "logcat -v time *:E "
                        + " >>" + resultpath + "/exec.txt", };
                ShellUtils.execCommand(commands, true);
    }


    @Override
    public void onDestroy() {
        Log.e("scripttool", "logcat kill");
        super.onDestroy();
    }

    private final class LogCatBinder extends ILogactService.Stub{

        @Override
        public void basicTypes(int anInt, long aLong, boolean aBoolean, float aFloat, double aDouble, String aString) throws RemoteException {

        }

        @Override
        public void startlogcat() throws RemoteException {

            new Thread(new Runnable() {
                @Override
                public void run() {
                    try {
                        logcat();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }).start();


        }
    }

}

3、定義好service後，可以設置一個開關來啓動logcat服務，代碼沒有貼全，但是大概思路是這樣，讀者可以自由發揮