![](/img/trans.png)
[英]android.support.v7.widget.AppCompatImageView cannot be cast to com.rey.material.widget.ImageView
[英]android.support.v7.widget.AppCompatImageView cannot be cast to android.view.ViewGroup
我正在用相機拍照,並將它們作為位圖添加到ArrayList中。 我有顯示所拍攝圖像的recyclerView。 我想要一個alertdialog,顯示單擊的圖像並帶有刪除選項。 將自定義布局設置為AlertDialog時遇到問題。 當我點擊圖片時,應用崩潰且錯誤提示
java.lang.ClassCastException:android.support.v7.widget.AppCompatImageView無法轉換為android.view.ViewGroup
錯誤指向此行代碼
視圖viewInflated = LayoutInflater.from(view.getContext())。inflate(R.layout.dialog_image,(ViewGroup)view,false); imageDialog.setView(viewInflated);
但我不確定該怎么辦。 我試圖將(ViewGroup)更改為其他內容,但是沒有運氣。
Adapter.java
public class Adapter extends RecyclerView.Adapter<Adapter.ViewHolder> {
private List<Bitmap> fotky;
private Bitmap foto;
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.recycler_view_item, parent, false);
return new ViewHolder(v);
}
@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
foto = fotky.get(position);
holder.photo.setImageBitmap(foto);
holder.photo.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
AlertDialog.Builder imageDialog = new AlertDialog.Builder(view.getContext());
imageDialog.setTitle("Image");
View viewInflated = LayoutInflater.from(view.getContext()).inflate(R.layout.dialog_image, (ViewGroup) view,false);
imageDialog.setView(viewInflated);
ImageView image = viewInflated.findViewById(R.id.fotka);
image.setImageBitmap(foto);
imageDialog.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.cancel();
}
});
imageDialog.setNegativeButton("delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
remove(position);
}
});
imageDialog.show();
//TODO tady ukázat full image s možností smazání
//remove(position);
}
});
}
public void add(int position, Bitmap item) {
fotky.add(position, item);
notifyItemInserted(position);
}
public void remove(int position) {
fotky.remove(position);
notifyItemRemoved(position);
notifyItemRangeChanged(position, fotky.size());
}
public Adapter(List<Bitmap> myDataset) {
fotky = myDataset;
}
@Override
public int getItemCount() {
return fotky.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
public ImageView photo;
public ViewHolder(View itemView) {
super(itemView);
photo = itemView.findViewById(R.id.imageView);
}
}
}
Dialog_image.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/fotka"
android:contentDescription="photo"/>
</LinearLayout>
發生此崩潰的原因是您在holder.photo
上設置了AppCompatImageView
類型的單擊偵聽器。 在onClick塊中,您將其類型轉換為ViewGroup
。
將其更改為以下內容。
View viewInflated = LayoutInflater.from(view.getContext()).inflate(R.layout.dialog_image, null);
它應該工作。
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