android 一个很好使用的 LogUtils 日志工具类

public class LogUtils {
static String className;//类名
static String methodName;//方法名
static int lineNumber;//行数

private LogUtils() {
}

public static boolean isDebuggable() {
return true;
}

private static String createLog(String log) {
StringBuffer buffer = new StringBuffer();
buffer.append(methodName);
buffer.append("(").append(className).append(":").append(lineNumber).append(")");
buffer.append(log);
return buffer.toString();
}

private static void getMethodNames(StackTraceElement[] sElements) {
className = sElements[1].getFileName();
methodName = sElements[1].getMethodName();
lineNumber = sElements[1].getLineNumber();
}

public static void e(String message) {
if (!isDebuggable())
return;
// Throwable instance must be created before any methods
getMethodNames(new Throwable()
4000
.getStackTrace());
Log.e(className, createLog(message));
}

public static void i(String message) {
if (!isDebuggable())
return;

getMethodNames(new Throwable().getStackTrace());
Log.i(className, createLog(message));
}

public static void d(String message) {
if (!isDebuggable())
return;

getMethodNames(new Throwable().getStackTrace());
Log.d(className, createLog(message));
}

public static void v(String message) {
if (!isDebuggable())
return;

getMethodNames(new Throwable().getStackTrace());
Log.v(className, createLog(message));
}

public static void w(String message) {
if (!isDebuggable())
return;

getMethodNames(new Throwable().getStackTrace());
Log.w(className, createLog(message));
}

public static void wtf(String message) {
if (!isDebuggable())
return;

getMethodNames(new Throwable().getStackTrace());
Log.wtf(className, createLog(message));
}

}