当我点击下载按钮时，我正在从Firebase下载图片。一切正常，直到我按下按钮，然后应用崩溃。我使用了调试器，并粘贴了显示的内容。
我今天刚刚升级了Android Studio，以查看是否有任何更改但仍然无效。据我所知，一切都已更新。
这是我项目的最后一步，有什么想法吗？谢谢。
public class WallpapersAdapter extends RecyclerView.Adapter<WallpapersAdapter.WallpaperViewHolder> {
private Context mCtx;
private List<Wallpaper> wallpaperList;
public WallpapersAdapter(Context mCtx, List<Wallpaper> wallpaperList) {
this.mCtx = mCtx;
this.wallpaperList = wallpaperList;
}
@NonNull
@Override
public WallpaperViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mCtx).inflate(R.layout.recyclerview_wallpapers, parent, false);
return new WallpaperViewHolder(view);
}
@Override
public void onBindViewHolder(@NonNull WallpaperViewHolder holder, int position) {
Wallpaper w = wallpaperList.get(position);
holder.textView.setText(w.title);
Glide.with(mCtx)
.load(w.url)
.into(holder.imageView);
if(w.isFavorite){
holder.checkBoxFav.setChecked(true);
}
}
@Override
public int getItemCount() {
return wallpaperList.size();
}
class WallpaperViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener, CompoundButton.OnCheckedChangeListener{
TextView textView;
ImageView imageView;
CheckBox checkBoxFav;
ImageButton buttonShare;
Button buttonDownload ;
public WallpaperViewHolder(View itemView) {
super(itemView);
textView = itemView.findViewById(R.id.text_view_title);
imageView = itemView.findViewById(R.id.image_view);
checkBoxFav = itemView.findViewById(R.id.checkbox_favorite);
buttonShare = itemView.findViewById(R.id.button_share);
buttonDownload = itemView.findViewById(R.id.download);
/*setWallpaper = itemView.findViewById(R.id.set_wallpaper);*/
/*setWallpaper.setOnClickListener(this);*/
checkBoxFav.setOnCheckedChangeListener(this);
/*buttonShare.setOnClickListener(this);*/
buttonDownload.setOnClickListener(this);
}
@Override
public void onClick(View view) {
switch (view.getId()){
case R.id.button_share:
shareWallpaper(wallpaperList.get(getAdapterPosition()));
break;
case R.id.download:
downloadWallpaper(wallpaperList.get(getAdapterPosition()));
break;
}
}
private void shareWallpaper(Wallpaper w){
((Activity) mCtx).findViewById(R.id.progressbar).setVisibility(View.VISIBLE);
Glide.with(mCtx)
.asBitmap()
.load(w.url)
.into(new SimpleTarget<Bitmap>() {
@Override
public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
((Activity) mCtx).findViewById(R.id.progressbar).setVisibility(View.GONE);
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_STREAM, getLocalBitmapUri(resource));
mCtx.startActivity(Intent.createChooser(intent, "The Wallpaper App"));
}
});
}
private Uri getLocalBitmapUri(Bitmap bmp){
Uri bmpUri = null;
try {
File file = new File(mCtx.getExternalFilesDir(Environment.DIRECTORY_PICTURES),
"the_wallpaper_app_" + System.currentTimeMillis() + ".png");
FileOutputStream out = new FileOutputStream(file);
bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
out.close();
bmpUri = Uri.fromFile(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return bmpUri;
}
private void downloadWallpaper(final Wallpaper wallpaper){
((Activity) mCtx).findViewById(R.id.progressbar).setVisibility(View.VISIBLE);
Glide.with(mCtx)
.asBitmap()
.load(wallpaper.url)
.into(new SimpleTarget<Bitmap>() {
@Override
public void onResourceReady(Bitmap resource, Transition<? super Bitmap> transition) {
((Activity) mCtx).findViewById(R.id.progressbar).setVisibility(View.GONE);
Intent intent = new Intent(Intent.ACTION_VIEW);
Uri uri = saveWallpaperAndGetUri(resource, wallpaper.id);
if (uri != null) {
intent.setDataAndType(uri, "image/*");
mCtx.startActivity(Intent.createChooser(intent, "The Wallpaper App"));
}
}
});
}
private Uri saveWallpaperAndGetUri(Bitmap bitmap, String id){
if(ContextCompat.checkSelfPermission(mCtx, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
!= PackageManager.PERMISSION_GRANTED){
if(ActivityCompat.shouldShowRequestPermissionRationale((Activity) mCtx, android.Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", mCtx.getPackageName(), null);
intent.setData(uri);
mCtx.startActivity(intent);
}else{
ActivityCompat.requestPermissions((Activity) mCtx, new String[]{android.Manifest.permission.WRITE_EXTERNAL_STORAGE}, 100 );
}
return null;
}
File folder = new File(Environment.getExternalStorageDirectory().toString() + "/the_wallpaper_app" );
folder.mkdirs();
File file = new File(folder, id + ".jpg" );
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush();
out.close();
return Uri.fromFile(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
if(FirebaseAuth.getInstance().getCurrentUser() == null){
Toast.makeText(mCtx, "Please login first", Toast.LENGTH_LONG).show();
compoundButton.setChecked(false);
return;
}
int position = getAdapterPosition();
Wallpaper w = wallpaperList.get(position);
DatabaseReference dbFavs = FirebaseDatabase.getInstance().getReference("users")
.child(FirebaseAuth.getInstance().getCurrentUser().getUid())
.child("favorites")
.child(w.category);
if(b){
dbFavs.child(w.id).setValue(w);
}else{
dbFavs.child(w.id).setValue(null);
}
}
}
}
调试报告：
android.os.FileUriExposedException: file:///storage/emulated/0/the_wallpaper_app/-LQBBi2ko8Z7x3-hQRa5.jpg exposed beyond app through Intent.getData()
at android.os.StrictMode.onFileUriExposed(StrictMode.java:1958)
at android.net.Uri.checkFileUriExposed(Uri.java:2356)
at android.content.Intent.prepareToLeaveProcess(Intent.java:10511)
at android.content.Intent.prepareToLeaveProcess(Intent.java:10486)
at android.content.Intent.prepareToLeaveProcess(Intent.java:10465)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1616)
at android.app.Activity.startActivityForResult(Activity.java:4564)
at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:68)
at android.app.Activity.startActivityForResult(Activity.java:4522)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:751)
at android.app.Activity.startActivity(Activity.java:4883)
at android.app.Activity.startActivity(Activity.java:4851)
at com.freedomsled.thewallpaperapp.adapters.WallpapersAdapter$WallpaperViewHolder$2.onResourceReady(WallpapersAdapter.java:205)
at com.freedomsled.thewallpaperapp.adapters.WallpapersAdapter$WallpaperViewHolder$2.onResourceReady(WallpapersAdapter.java:194)
at com.bumptech.glide.request.SingleRequest.onResourceReady(SingleRequest.java:568)
at com.bumptech.glide.request.SingleRequest.onResourceReady(SingleRequest.java:530)
at com.bumptech.glide.load.engine.EngineJob.handleResultOnMainThread(EngineJob.java:218)
at com.bumptech.glide.load.engine.EngineJob$MainThreadCallback.handleMessage(EngineJob.java:324)
at android.os.Handler.dispatchMessage(Handler.java:101)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6938)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)