我是Android新手。我在Eclipse中使用相机应用程序。捕获的图像存储在 APPLICATION FOLDER(内部存储)中。图像存储为JPEG格式,但我希望将其另存为PNG格式。但是,我不想将图像保存在外部存储目录上。
这是我的代码:
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "Picture_" + date + ".JPEG";
String filename = pictureFileDir.getPath() + File.separator + photoFile;
File pictureFile = new File(filename);
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
bmp.compress(Bitmap.CompressFormat.PNG,100,fos);
fos.flush();
// fos.write(data);
fos.close();
Toast.makeText(context, "New Image saved:" + photoFile,Toast.LENGTH_LONG).show();
} catch (Exception error) {
//Log.d(IntersaActivity.DEBUG_TAG, "File" + filename + "not saved: "+ error.getMessage());
Toast.makeText(context, "Image could not be saved.",
Toast.LENGTH_LONG).show();
}
}
private File getDir() {
String filepath = "MyFileStorage";
ContextWrapper contextWrapper = new ContextWrapper(context);
File sdDir = contextWrapper.getDir(filepath, Context.MODE_PRIVATE);
//File sdDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
return new File(sdDir, "CameraAPIDemo");
}
}
答案 0 :(得分:0)
使用
private void savePicture(String filename, Bitmap b, Context ctx){
try {
ObjectOutputStream oos;
FileOutputStream out;// = new FileOutputStream(filename);
out = ctx.openFileOutput(filename, Context.MODE_PRIVATE);
oos = new ObjectOutputStream(out);
b.compress(Bitmap.CompressFormat.PNG, 100, oos);
oos.close();
oos.notifyAll();
out.notifyAll();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
并将文件名的扩展名设置为PNG
希望它有所帮助。
编辑:调用此方法的总代码。
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
String photoFile = "Picture_" + date + ".PNG";
String filename = pictureFileDir.getPath() + File.separator + photoFile;
try {
savePicture(filename, bmp, context);
Toast.makeText(context, "New Image saved:" + photoFile,Toast.LENGTH_LONG).show();
} catch (Exception error) {
Toast.makeText(context, "Image could not be saved.", Toast.LENGTH_LONG).show();
}