android 日志输出封装,android打印日志封装

public class LogUtils {

static String className;//类名

static String methodName;//方法名

static int lineNumber;//行数

private LogUtils(){

/* Protect from instantiations */

}

public static boolean isDebuggable() {

return BuildConfig.DEBUG;

}

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().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));

}