该类可以在App正式上线后，统一关闭日志的输出

public class LogUtil {
    public static final int VERBOSE = 1;
    public static final int DEBUG = 2;
    public static final int INFO = 3;
    public static final int WARN = 4;
    public static final int ERROR = 5;
    public static final int NOTHING = 6;
    //    在测试的时候设置为VERBOSE等  程序正式发布 设置为NOTHING即可
    public static final int level = VERBOSE;

    public static void v(String TAG, String msg) {
        if (level <= VERBOSE) {
            Log.v(TAG, msg);
        }
    }

    public static void d(String TAG, String msg) {
        if (level <= DEBUG) {
            Log.d(TAG, msg);
        }
    }

    public static void i(String TAG, String msg) {
        if (level <= INFO) {
            Log.i(TAG, msg);
        }
    }

    public static void w(String TAG, String msg) {
        if (level <= WARN) {
            Log.w(TAG, msg);
        }
    }

    public static void e(String TAG, String msg) {
        if (level <= ERROR) {
            Log.e(TAG, msg);
        }
    }

}
//使用方法
LogUtil.d(TAG, "Test");