Android 定义全局LOG打印日志，并显示调用者相关信息

public class LogUtils {
private static final boolean VERBOSE = true;
private static final boolean DEBUG = true;
private static final boolean INFO = true;
private static final boolean WARN = true;
private static final boolean ERROR = true;
private static final String SEPARATOR = ",";

public static void v(String message) {
if (VERBOSE) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
String tag = getDefaultTag(stackTraceElement);
Log.v(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void v(String tag, String message) {
if (VERBOSE) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
if (TextUtils.isEmpty(tag)) {
tag = getDefaultTag(stackTraceElement);
}
Log.v(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void d(String message) {
if (DEBUG) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
String tag = getDefaultTag(stackTraceElement);
Log.d(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void d(String tag, String message) {
if (DEBUG) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
if (TextUtils.isEmpty(tag)) {
tag = getDefaultTag(stackTraceElement);
}
Log.d(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void i(String message) {
if (INFO) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
String tag = getDefaultTag(stackTraceElement);
Log.i(tag, message);
}
}

public static void i(String tag, String message) {
if (INFO) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
if (TextUtils.isEmpty(tag)) {
tag = getDefaultTag(stackTraceElement);
}
Log.i(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void w(String message) {
if (WARN) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
String tag = getDefaultTag(stackTraceElement);
Log.w(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void w(String tag, String message) {
if (WARN) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
if (TextUtils.isEmpty(tag)) {
tag = getDefaultTag(stackTraceElement);
}
Log.w(tag, getLogInfo(stackTraceElement) + message);
}
}

public static void e(String message) {
if (ERROR) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
String tag = getDefaultTag(stackTraceElement);
Log.e(tag, message);
}
}

public static void e(String tag, String message) {
if (ERROR) {
StackTraceElement stackTraceElement = Thread.currentThread().getStackTrace()[3];
if (TextUtils.isEmpty(tag)) {
tag = getDefaultTag(stackTraceElement);
}
Log.e(tag, getLogInfo(stackTraceElement) + message);
}
}

/**
* 获取默认的TAG名称. 比如在MainActivity.java中调用了日志输出. 则TAG为MainActivity
*/
public static String getDefaultTag(StackTraceElement stackTraceElement) {
String fileName = stackTraceElement.getFileName();
String stringArray[] = fileName.split("\\.");
String tag = stringArray[0];
return tag;
}

/**
* 输出日志所包含的信息
*/
public static String getLogInfo(StackTraceElement stackTraceElement) {
StringBuilder logInfoStringBuilder = new StringBuilder();
// 获取线程名
String threadName = Thread.currentThread().getName();
// 获取线程ID
long threadID = Thread.currentThread().getId();
// 获取文件名.即xxx.java
String fileName = stackTraceElement.getFileName();
// 获取类名.即包名+类名
String className = stackTraceElement.getClassName();
// 获取方法名称
String methodName = stackTraceElement.getMethodName();
// 获取生日输出行数
int lineNumber = stackTraceElement.getLineNumber();
logInfoStringBuilder.append("[ ");
logInfoStringBuilder.append("threadID=" + threadID).append(SEPARATOR);
logInfoStringBuilder.append("threadName=" + threadName).append(SEPARATOR);
logInfoStringBuilder.append("fileName=" + fileName).append(SEPARATOR);
logInfoStringBuilder.append("className=" + className).append(SEPARATOR);
logInfoStringBuilder.append("methodName=" + methodName).append(SEPARATOR);
logInfoStringBuilder.append("lineNumber=" + lineNumber);
logInfoStringBuilder.append(" ] ");
return logInfoStringBuilder.toString();
}

}