菜鸟笔记7——调试方法，log

logcat界面的打开：

eclipse->Window->Open Perspective->DDMS,好了能看到logcat了，在程序各处写的Log.e(TAG,"adfafewf");什么的都会在这里显示。我操他大爷找死我了

附录：DDMS 的全称是Dalvik Debug Monitor Service，是 Android 开发环境中的Dalvik虚拟机调试监控服务。它为我们提供例如：为测试设备截屏，针对特定的进程查看正在运行的线程以及堆信息、Logcat、广播状态信息、模拟电话呼叫、接收SMS、虚拟地理坐标等等。

 

API for sending log output.

Generally, use the Log.v() Log.d() Log.i() Log.w() and Log.e() methods.

The order in terms of verbosity, from least to most is ERROR, WARN, INFO, DEBUG, VERBOSE. Verbose should never be compiled into an application except during development. Debug logs are compiled in but stripped at runtime. Error, warning and info logs are always kept.

Tip: A good convention is to declare a TAG constant in your class:

private static final String TAG = "MyActivity";

and use that in subsequent calls to the log methods.

Tip: Don't forget that when you make a call like

Log.v(TAG, "index=" + i);

 

public static int d (String tag, String msg)

 

Since: API Level 1

Send a DEBUG log message.

Parameters

tagUsed to identify the source of a log message. It usually identifies the class or activity where the log call occurs.msgThe message you would like logged.

 今天的几个error log:

TAG为IsiCamera2Activity的Log产生于如下片段：

        try        {          BufferedOutputStream bos = new BufferedOutputStream          (new FileOutputStream(myCaptureFile));                    /* 采用压缩转档方法 */          bm.compress(Bitmap.CompressFormat.JPEG, 80, bos);            /* 调用flush()方法，更新BufferStream */          bos.flush();                    /* 结束OutputStream */          bos.close();          /* 显示完图文件，立即重置相机，并关闭预览 */          resetCamera();                    /* 再重新启动相机继续预览 */          initCamera();        }        catch (Exception e)        {          Log.e(TAG, e.getMessage());        }

看来是onPictureTaken()下执行到照片存储的时候。出现了问题。悲剧。不知道怎么解决，留这里备忘。

删除掉照片存储的部分，不再抛出error.但是leaked memory和failed to set all parameters依然存在。继续查吧，struggle..

内存溢出？