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我在保存绘制的画布图像时遇到问题。代码如下:安卓画布绘图
public void save_it(File file)
{
String fname = file.getAbsolutePath();
MyView mv =new MyView(this);
FileOutputStream fos = null;
try{
fos = new FileOutputStream(fname);
mv.myBitmap.compress(CompressFormat.JPEG, 100, fos);
Toast.makeText(this,"Image Saved", 2000).show();
}
catch(Exception e){
Toast.makeText(this,"Error Saving Image", 2000).show();
Log.i("DAVE","stacktrace is " + e);
}
有什么问题?堆栈跟踪在哪里?什么是“MyView”?它的'myBitmap'字段是否在施工时被初始化? (P.S .:请使用三参数Log方法:'Log.i(“DAVE”,“stacktrace following”,e);' – 2012-03-25 15:54:19