一个自己写的Log的包括类，便于在一行中打印调用堆栈：
package com.android.util;
/**
* 这是一个打印堆栈的Log包裹类。
* <p>使用方法是传入一个参数（必须为String），那么verbose方法不会打印堆栈，debug会打印2层，info打印3层，依次下去；
* <p>如果传入两个参数，则第2个参数为int类型，属于自己控制打印的层数。
*
* @author geduosishisi
* @version 1.0
*/
public class CamLog {
private static final int TRACE_DEPTH = 4;
private static final int NUM8 = 8;
private static final int NUM7 = 7;
private static final int NUM6 = 6;
private static final int NUM5 = 5;
private static final int NUM4 = 4;
private static final int NUM3 = 3;
private static final int NUM2 = 2;
private static final int NUM1 = 1;
/**
* 打印verbose log.
*
* @param message 所有参数
*/
@SuppressWarnings("unused")
public static void verbose(Object... message) {
if (message != null && message.length == 1) {
android.util.Log.v(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], NUM1));
} else if (message != null && message.length == 2) {
android.util.Log.v(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], (Integer)message[1]));
}
}
/**
* 打印debug log.
*
* @param message 所有参数
*/
@SuppressWarnings("unused")
public static void debug(Object... message) {
if (message != null && message.length == 1) {
android.util.Log.d(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], NUM2));
} else if (message != null && message.length == 2) {
android.util.Log.d(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], (Integer)message[1]));
}
}
/**
* 打印info log.
*
* @param message 所有参数
*/
@SuppressWarnings("unused")
public static void info(Object... message) {
if (message != null && message.length == 1) {
android.util.Log.i(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], NUM3));
} else if (message != null && message.length == 2) {
android.util.Log.i(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], (Integer)message[1]));
}
}
/**
* 打印warning log.
*
* @param message 所有参数
*/
@SuppressWarnings("unused")
public static void warning(Object... message) {
if (message != null && message.length == 1) {
android.util.Log.w(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], NUM4));
} else if (message != null && message.length == 2) {
android.util.Log.w(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], (Integer)message[1]));
}
}
/**
* 打印error log.
*
* @param message 所有参数
*/
@SuppressWarnings("unused")
public static void error(Object... message) {
if (message != null && message.length == 1) {
android.util.Log.e(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], NUM5));
} else if (message != null && message.length == 2) {
android.util.Log.e(
suppressFileExtension(Thread.currentThread().getStackTrace()[TRACE_DEPTH - 1].getFileName()),
makeLogStringWithLongInfo((String)message[0], (Integer)message[1]));
}
}
private static String makeLogStringWithLongInfo(String messages, int depth) {
StackTraceElement stackTrace = Thread.currentThread().getStackTrace()[TRACE_DEPTH];
StringBuilder builder = new StringBuilder();
appendMethodLineInfo(builder, stackTrace);
builder.append(" ");
builder.append(messages);
StackTraceElement stackTraceCall5 = null;
StackTraceElement stackTraceCall6 = null;
StackTraceElement stackTraceCall7 = null;
StackTraceElement stackTraceCall8 = null;
StackTraceElement[] stackTraceArray = Thread.currentThread().getStackTrace();
if (depth >= NUM2 && stackTraceArray.length > NUM5) {
stackTraceCall5 = Thread.currentThread().getStackTrace()[NUM5];
}
if (depth >= NUM3 && stackTraceArray.length > NUM6) {
stackTraceCall6 = Thread.currentThread().getStackTrace()[NUM6];
}
if (depth >= NUM4 && stackTraceArray.length > NUM7) {
stackTraceCall7 = Thread.currentThread().getStackTrace()[NUM7];
}
if (depth >= NUM5 && stackTraceArray.length > NUM8) {
stackTraceCall8 = Thread.currentThread().getStackTrace()[NUM8];
}
StringBuilder subBuilder = new StringBuilder();
if (stackTraceCall5 != null) {
appendFileMethodLineInfo(subBuilder, stackTraceCall5);
}
if (stackTraceCall6 != null) {
appendFileMethodLineInfo(subBuilder, stackTraceCall6);
}
if (stackTraceCall7 != null) {
appendFileMethodLineInfo(subBuilder, stackTraceCall7);
}
if (stackTraceCall8 != null) {
appendFileMethodLineInfo(subBuilder, stackTraceCall8);
}
builder.append(subBuilder);
return builder.toString();
}
private static String suppressFileExtension(String filename) {
int extensionPosition = filename.lastIndexOf('.');
if (extensionPosition > 0) {
return filename.substring(0, extensionPosition);
} else {
return filename;
}
}
private static void appendMethodLineInfo(StringBuilder builder, StackTraceElement stackTrace) {
builder.append(stackTrace.getMethodName());
builder.append("():");
builder.append(stackTrace.getLineNumber());
builder.append(" ");
}
private static void appendFileMethodLineInfo(StringBuilder builder, StackTraceElement stackTrace) {
builder.append(" <- ");
String file = stackTrace.getFileName();
if (file != null) {
String fileSub = file.substring(0, file.length() - NUM5);
builder.append(fileSub);
builder.append(":");
}
builder.append(stackTrace.getMethodName());
builder.append("():");
builder.append(stackTrace.getLineNumber());
}
}
