如果你想在你的Android程序中自动打印MainActivity.onCreate(line:37)这种类名.方法名(行数)的日志该如何实现呢？
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
StackTraceElement[] stacktrace = Thread.currentThread().getStackTrace();
System.out.println("call oncreate method");
System.out.println("stacktrace len:" + stacktrace.length);
for (int i = 0; i < stacktrace.length; i++) {
System.out.println("---- the " + i + " element ----");
System.out.println("toString: " + stacktrace[i].toString());
System.out.println("ClassName: " + stacktrace[i].getClassName());
System.out.println("FileName: " + stacktrace[i].getFileName());
System.out.println("LineNumber: " + stacktrace[i].getLineNumber());
System.out.println("MethodName: " + stacktrace[i].getMethodName());
}
} 在onCreate方法中调用getStackTrace方法获取调用栈的信息。打印的结果如下：
private static String generateTag(StackTraceElement stack){
String tag = "%s.%s(L:%d)";
String className = stack.getClassName();
className = className.substring(className.lastIndexOf(".")+1);
tag = String.format(tag, stack.getClassName(),className,stack.getLineNumber());
tag = customTagPrefix==null?tag:customTagPrefix+":"+tag;
return tag;
}
CustomTagPrefix是自定义的前缀。public static void d(String content){
if (!allowD) {
return ;
}
StackTraceElement caller = Thread.currentThread().getStackTrace()[3];
String tag = generateTag(caller);
Log.d(tag, content);
}
public static void d(String content,Throwable thr){
if (!allowD) {
return;
}
StackTraceElement caller = Thread.currentThread().getStackTrace()[3];
String tag = generateTag(caller);
Log.d(tag, content,thr);
} getStackTrace()[3],取第四个的原因是前两个分别为vm和Thread的方法，下标2是当前的d()方法，调用d()的方法的下标为3。利用线程运行栈StackTraceElement设计Android日志模块
原文：http://blog.csdn.net/tangjiean/article/details/38823239