android logcat中显示当前类名函数名和行数信息

android logcat中显示当前类名函数名和行数信息

import android.util.Log;

public class LogUtils {

private static final String TAG = "LogUtils";
private static final int STACK_TRACE = 3;

public static void log(String log){
StringBuffer sb = new StringBuffer(log);
sb.append(getSystemMsg());
Log.println(Log.ASSERT, TAG, sb.toString());
}

public static void logStackTrace(){
log(Log.getStackTraceString(new Throwable()));
}

private static String getSystemMsg(){
StringBuffer sb = new StringBuffer();
sb.append("  [ ");
sb.append("file:").append(getFileName()).append(", ");
sb.append("line:").append(getLineNumber()).append(", ");
sb.append("method:").append(getMethodName()).append(", ");
sb.append("class:").append(getClassName());
sb.append(" ]");
return sb.toString();
}

private static String getLineNumber(){
return String.valueOf(new Throwable().getStackTrace()[STACK_TRACE].getLineNumber());
}

private static String getMethodName(){
return new Throwable().getStackTrace()[STACK_TRACE].getMethodName();
}

private static String getClassName(){
return new Throwable().getStackTrace()[STACK_TRACE].getClassName();
}

private static String getFileName(){
return new Throwable().getStackTrace()[STACK_TRACE].getFileName();
}

}

需要注意的是 STACK_TRACE , 可以理解是调用函数的堆栈数,调整这个值可以获得第STACK_TRACE次调用的函数,如果现实的函数名不对，试着调下这个值就好了！