将图像从手机上传到RecyclerView GridView [英] Uploading Image from Phone to RecyclerView GridView
本文介绍了将图像从手机上传到RecyclerView GridView的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试使用滑行来做到这一点.我有一个Gridview回收器视图，其中已经有9张图片在回收器中.有一个实现的OnClickListener，它可以将我带到手机的画廊，以便可以将图像上载到Recycler视图中.当我使用mLayoutManager.findViewByPosition(imagePosition)时出现问题.Glide需要一个imageView，但是layoutmanager返回CardView吗?从回收者视图"中每个项目的自定义XML中获取.确实，我该怎么做呢?谢谢！！
I'm trying to use glide to do this. I have a Gridview recycler view with 9 pictures already in the Recycler. There is an OnClickListener implemented which takes me to the phone's gallery so I can upload an image into the Recycler view. Problem arises when I use mLayoutManager.findViewByPosition(imagePosition). Glide needs an imageView, but the layoutmanager returns a CardView? from the custom XML for each item in the Recycler View. Exactly, how would I go about doing this? Thank you!!
错误:
E/libc: Access denied finding property "vendor.gralloc.disable_ahardware_buffer"
W/Glide: Failed to find GeneratedAppGlideModule. You should include an annotationProcessor compile dependency on com.github.bumptech.glide:compiler in your application and a @GlideModule annotated AppGlideModule implementation or LibraryGlideModules will be silently ignored
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.imagegridactivity, PID: 25530
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1, result=-1, data=Intent { {com.example.imagegridactivity/com.example.imagegridactivity.MainActivity}: java.lang.ClassCastException: androidx.cardview.widget.CardView cannot be cast to android.widget.ImageView
at android.app.ActivityThread.deliverResults(ActivityThread.java:4845)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4886)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
Caused by: java.lang.ClassCastException: androidx.cardview.widget.CardView cannot be cast to android.widget.ImageView
at com.example.imagegridactivity.MainActivity.onActivityResult(MainActivity.java:128)
at android.app.Activity.dispatchActivityResult(Activity.java:8135)
at android.app.ActivityThread.deliverResults(ActivityThread.java:4838)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:4886)
at android.app.servertransaction.ActivityResultItem.execute(ActivityResultItem.java:51)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
I/Process: Sending signal. PID: 25530 SIG: 9
Disconnected from the target VM, address: 'localhost:8600', transport: 'socket'
适配器:
public class AnimalsAdapter extends RecyclerView.Adapter<AnimalsAdapter.ViewHolder> {
ImageView imageView;
private Uri imageUri;
private ArrayList<animal_item> mDataSet;
private Context mContext;
private OnItemClickListener mListener;
public ArrayList<animal_item> getDataSet() {
return mDataSet;
}
public void setDataSet(ArrayList<animal_item> mDataSet) {
this.mDataSet = mDataSet;
}
public ImageView getImageView() {
return imageView;
}
public void setImageView(ImageView imageView) {
this.imageView = imageView;
}
public Context getContext() {
return mContext;
}
public void setContext(Context mContext) {
this.mContext = mContext;
}
public Uri getImageUri() {
return imageUri;
}
public void setImageUri(Uri imageUri) {
this.imageUri = imageUri;
}
public interface OnItemClickListener {
void onItemClick(int position);
}
public void setOnItemClickListener(OnItemClickListener listener) {
mListener = listener;
}
public AnimalsAdapter(Context context, ArrayList<animal_item> DataSet) {
mDataSet = DataSet;
mContext = context;
}
public ArrayList<animal_item> DataSet() {
return mDataSet;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public ImageView mImageView;
public LinearLayout mLinearLayout;
public ViewHolder(View v, final OnItemClickListener listener) {
super(v);
mImageView = (ImageView) v.findViewById(R.id.tv);
mImageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (listener != null) {
int position = getAdapterPosition();
if (position != RecyclerView.NO_POSITION) ;
listener.onItemClick(position);
}
}
});
mLinearLayout = (LinearLayout) v.findViewById(R.id.ll);
}
public ImageView getImageView() {
return mImageView;
}
public void setImageView(ImageView mImageView) {
this.mImageView = mImageView;
}
}
@Override
public AnimalsAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
// Create a new View
View v = LayoutInflater.from(mContext).inflate(R.layout.custom_view, parent, false);
ViewHolder vh = new ViewHolder(v, (OnItemClickListener) mListener);
return vh;
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final animal_item animalItem = mDataSet.get(position);
holder.mImageView.setImageResource(animalItem.getImageResource());
imageView = holder.mImageView;
}
@Override
public int getItemCount() {
return mDataSet.size();
}
}
个人视图:
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardCornerRadius="4dp"
card_view:cardElevation="2dp"
card_view:cardMaxElevation="4dp"
card_view:contentPadding="5dp">
<LinearLayout
android:id="@+id/ll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="3dp">
<ImageButton
android:id="@+id/tv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:layout_margin="2dp"
android:gravity="center"
android:padding="10dp"
android:textColor="#000"
android:textSize="25dp"
android:textStyle="bold" />
</LinearLayout>
</androidx.cardview.widget.CardView>
主要活动:
public class MainActivity extends AppCompatActivity {
private Context mContext;
RelativeLayout mRelativeLayout;
private RecyclerView mRecyclerView;
private AnimalsAdapter mAdapter;
private RecyclerView.LayoutManager mLayoutManager;
private ArrayList<animal_item> arrayList;
private Uri imageUri;
private int imagePosition;
@Override
protected void onCreate(Bundle savedInstanceState) {
requestWindowFeature(Window.FEATURE_ACTION_BAR);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = getApplicationContext();
getSupportActionBar().setBackgroundDrawable(
new ColorDrawable(Color.parseColor("#FF677589"))
);
mRelativeLayout = findViewById(R.id.rl);
mRecyclerView = findViewById(R.id.recycler_view);
final int[] imageArray = new int[9];
for (int i = 0; i < imageArray.length; i++) {
imageArray[i] = R.mipmap.pic1_foreground;
}
arrayList = new ArrayList<>();
for (int i = 0; i < imageArray.length; i++) {
int image = imageArray[i];
arrayList.add(new animal_item(image));
}
mLayoutManager = new GridLayoutManager(mContext, 3);
mRecyclerView.setLayoutManager(mLayoutManager);
mAdapter = new AnimalsAdapter(mContext, arrayList);
mRecyclerView.setAdapter(mAdapter);
mAdapter.setOnItemClickListener(new AnimalsAdapter.OnItemClickListener() {
@Override
public void onItemClick(int position) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent, 1);
}
});
ItemTouchHelper helper = new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(ItemTouchHelper.UP | ItemTouchHelper.DOWN | ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT, 0) {
final ArrayList aL = new ArrayList<>();
@Override
public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder dragged, @NonNull RecyclerView.ViewHolder target) {
int position_dragged = dragged.getAdapterPosition();
int position_target = target.getAdapterPosition();
Collections.swap(arrayList, position_dragged, position_target);
mAdapter.notifyItemMoved(position_dragged, position_target);
//Collections.copy(mQuestion11List, aL);
return false;
}
@Override
public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
}
});
helper.attachToRecyclerView(mRecyclerView);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
imageUri = data.getData();
//mAdapter.getDataSet().get(imagePosition).setImageResource();
Glide.with(MainActivity.this).load(imageUri).into(mLayoutManager.findViewByPosition(imagePosition));
}
}
个人物品:
package com.example.imagegridactivity;
public class animal_item {
private int imageResource;
public animal_item(int imageResource) {
this.imageResource = imageResource;
}
public int getImageResource() {
return imageResource;
}
public void setImageResource(int imageResource) {
this.imageResource = imageResource;
}
}
推荐答案
方法mLayoutManager.findViewByPosition(imagePosition)返回表示相应适配器位置的视图.您必须在返回的视图上使用findViewById(R.id.tv)来获取图像视图，并将其传递为目标滑动.
The method mLayoutManager.findViewByPosition(imagePosition) return the view representing the corresponding adapter position. You have to use findViewById(R.id.tv) on that returned view to get the image view and pass it to glide as target.
这篇关于将图像从手机上传到RecyclerView GridView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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