我想把一个ImageView设置为刚刚拍摄的图片。相机应用程序可以正常工作,并将图像保存在正确的位置,但是当我尝试加载图像并将其设置为ImageView时,它会保持空白。除了使用最近拍摄的图像路径之外,我还尝试硬编码现有图像的路径,但是出现了同样的问题。我已经检查了其他线程,但是我看不出我的代码有任何区别。
这是相机函数:
private void takePicture(){
Intent imageIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
File imagesFolder = new File(Environment.getExternalStorageDirectory(), "/resources/resources/WI"+job_num);
image_name = username+"_"+date+".png";
File image_file = new File(imagesFolder, image_name);
while(image_file.exists()){
image_name = username+"-"+date+"("+ image_count+").png";
image_count+=1;
image_file = new File(imagesFolder,image_name);
}
image_path = imagesFolder+image_name;
Uri uriSavedImage = Uri.fromFile(image_file);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
int request_code = 100;
startActivityForResult(imageIntent, request_code);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(resultCode == RESULT_OK){
ImageView thumb = (ImageView) findViewById(R.id.thumbnail);
Bitmap bmp = BitmapFactory.decodeFile(image_path);
thumb.setImageBitmap(bmp);
Toast.makeText(this, "Image Saved", Toast.LENGTH_SHORT).show();
}
else
Toast.makeText(this,"Error Saving Image", Toast.LENGTH_SHORT).show();
}
最后,这是ImageView:
<ImageView
android:id="@+id/thumbnail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/camera"
android:layout_marginTop="10dp"
android:contentDescription="@string/picture_thumbnail"/>
需要改变什么?谢谢!