从我的应用程序在SD卡上保存图片时出现问题。 当我拍照并将其保存在SD卡上并转到我的应用程序并获取一个新的并将其保存在SD卡上时,会出现上一个预览图片,当我在计算机上查看它时,它看起来已损坏?
为什么会出现这个问题?
public static void save(Bitmap bm, String path) {
OutputStream outStream = null;
try {
outStream = new FileOutputStream(new File(path));
bm.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
outStream.flush();
outStream.close();
bm.recycle();
System.gc();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
enter code here
答案 0 :(得分:2)
使用此方法存储图像并显示图像。这用于存储图像
//create new directory to store image
File photo = new File(Environment.getExternalStorageDirectory()+"/Android/data/"+getApplicationContext().getPackageName()+"/files/Receipt");
boolean success = false;
if(!photo.exists())
{
success = photo.mkdirs();
}
//if exists save the image in specified path
if(!success)
{
dbimgguid = UUID.randomUUID();
imagename =dbimgguid.toString();
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
photo = new File(Environment.getExternalStorageDirectory()+"/Android/data/"+getApplicationContext().getPackageName()+"/files/Receipt", imagename+".png");
intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(photo));
imageurl = Uri.fromFile(photo);
startActivityForResult(intent, CAMERA_RECEIPTREQUEST);
}
查看图像
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode)
{
case CAMERA_RECEIPTREQUEST:
if(resultCode== Activity.RESULT_OK)
{
//Toast.makeText(this, "Receipt Image Saved", Toast.LENGTH_SHORT).show();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 8;
ImageView jpgView = (ImageView)findViewById(R.id.imageView1);
Bitmap receipt = BitmapFactory.decodeFile(photo.toString(),options);
jpgView.setImageBitmap(receipt);
}
break;
}
我希望这会对你有所帮助.. }
答案 1 :(得分:0)
您是否有权存储到SD卡?我相信您需要保存并保存为SD权限。