Android---自定义Log

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新建一个LogUtil的类

（debug时打印，release时不打印）

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;    public static 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：

LogUtil.d("TAG", "debug log");

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