安卓异常输出不完整怎么办

我们再开发得时候经常需要输出异常信息.不如看看以下代码:

    
    public void test(){
        try{
            int i = 1;
            int b = 0 ;
            int c = i/b;
        }catch (Exception ex){
            Log.d("2635", "test: "+ex.getMessage());
        }
    }

上面这个代码会输出 ,那么看到这个东西我们就知道程序错误是由于除0了 .

 test: divide by zero

但是,实际项目一般很大.我们需要定位到具体哪个类,哪一行.就跟我们再IDE上面看到得异常一样,比如这样.除了知道原因,我们还要知道第几行.

    public void test(){
        try{
            int i = 1;
            int b = 0 ;
            int c = i/b;
        }catch (Exception ex){
            Writer writer = new StringWriter();
            PrintWriter printWriter = new PrintWriter(writer);
            ex.printStackTrace(printWriter);
            Throwable cause = ex.getCause();
            while (cause!=null){
                cause.printStackTrace(printWriter);
                cause = cause.getCause();
            }
            printWriter.close();
            String result = writer.toString();
            Log.d("2635", "test: "+result);
        }
    }

修改后,输出得日志就是这样了,这样我们就可以定位到错误得代码