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標題: 我使用RecyclerView程式碼沒出現錯誤可是執行時會錯 [打印本頁]

作者: GUO0630 時間: 2018-5-31 00:33
標題: 我使用RecyclerView程式碼沒出現錯誤可是執行時會錯
這是我的 RecyclerViewAdapter_talk黨
package com.example.wells.ig;

import android.content.Context;
import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.List;

public class RecyclerViewAdapter_talk extends RecyclerView.Adapter<RecyclerViewAdapter_talk.MyViewHolder> {
private Context mmContext;
private List<home_talk> mmData;

public RecyclerViewAdapter_talk(Context mmContext, List<home_talk> mmData){
      this.mmContext =mmContext;
      this.mmData =mmData;

}

@NonNull
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
      View view;
      LayoutInflater mmInflater =LayoutInflater.from(mmContext);
      view = mmInflater.inflate(R.layout.activity_time_talk,parent,false);

      return new MyViewHolder(view);
}

@Override

public void onBindViewHolder(@NonNull RecyclerViewAdapter_talk.MyViewHolder holder, final int position) {
      holder.midname.setText(mmData.get(position).getId_name());
      holder.mhandmag.setImageResource(mmData.get(position).getHand_pgm());
      holder.cardView.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View view) {
            Intent intent =new Intent(mmContext,time_limit_first.class);
            intent.putExtra("Title",mmData.get(position).getId_name());
            intent.putExtra("Thumbnail",mmData.get(position).getHand_pgm());
            mmContext.startActivity(intent);
         }
      });
}
public int getItemCount()  {return mmData.size();}

public static class MyViewHolder extends RecyclerView.ViewHolder{
      TextView midname;
      ImageView mhandmag;
      CardView cardView;
      public MyViewHolder(View itemView){
         super (itemView);
         midname = itemView.findViewById(R.id.idname);
      mhandmag = itemView.findViewById(R.id.hand);
         cardView=itemView.findViewById(R.id.time_limit_first);

      }

}
}這是另一個檔案public class home_talk {
private String Id_name;
private  int Hand_pgm;

public home_talk(String id_name, int hand_pgm) {
      Id_name = id_name;
      Hand_pgm = hand_pgm;
}

public String getId_name() {
      return Id_name;
}

public int getHand_pgm() {
      return Hand_pgm;
}

public void setId_name(String id_name) {
      Id_name = id_name;
}

public void setHand_pgm(int hand_pgm) {
      Hand_pgm = hand_pgm;
}
}
主頁

talks= new ArrayList<>();
talks.add(new home_talk("測試1",R.drawable.dog_1));
talks.add(new home_talk("測試2",R.drawable.dog_2));
talks.add(new home_talk("測試3",R.drawable.dog_3));
talks.add(new home_talk("測試4",R.drawable.dog_4));
talks.add(new home_talk("測試5",R.drawable.dog_4));
RecyclerView mmyra =rootView.findViewById(R.id.recyclerview_talk);
RecyclerViewAdapter_talk mmyAdapter =new RecyclerViewAdapter_talk(getActivity(),talks);
mmyra.setLayoutManager(new GridLayoutManager(getActivity(),1,GridLayoutManager.HORIZONTAL,false));
mmyra.setAdapter(mmyAdapter);

新手發文怕有看不懂的地方多包涵

作者: muska1116 時間: 2018-5-31 09:41
程式碼我看沒什麼問題，我建個新專案來跑實機也 ok，你說是執行時發生錯誤，應該是點擊後會閃退，所以我在猜有兩個可能，一個是你的 time_limit_first 這個 Activity 沒有加到 AndroidManifest.xml，一個是 time_limit_first 在解析 Intent 的資料那裡出錯，如果都不是的話，可能就要看一下 Log 才知道。

作者: GUO0630 時間: 2018-5-31 16:38

muska1116 發表於 2018-5-31 09:41
程式碼我看沒什麼問題，我建個新專案來跑實機也 ok，你說是執行時發生錯誤，應該是點擊後會閃退，所以我在 ...

這是他的錯誤訊息看不是很懂抱歉

E/AndroidRuntime: FATAL EXCEPTION: main
               Process: com.example.wells.ig, PID: 4990
               java.lang.ClassCastException: android.support.v7.widget.AppCompatButton cannot be cast to android.widget.ImageView
                  at com.example.wells.ig.RecyclerViewAdapter_talk$MyViewHolder.<init>(RecyclerViewAdapter_talk.java:61)
                  at com.example.wells.ig.RecyclerViewAdapter_talk.onCreateViewHolder(RecyclerViewAdapter_talk.java:34)
                  at com.example.wells.ig.RecyclerViewAdapter_talk.onCreateViewHolder(RecyclerViewAdapter_talk.java:16)
                  at android.support.v7.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6685)
                  at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5869)
                  at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5752)
                  at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5748)
                  at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2232)
                  at android.support.v7.widget.GridLayoutManager.layoutChunk(GridLayoutManager.java:556)
                  at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1519)
                  at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:614)
                  at android.support.v7.widget.GridLayoutManager.onLayoutChildren(GridLayoutManager.java:170)
                  at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3812)
                  at android.support.v7.widget.RecyclerView.onMeasure(RecyclerView.java:3225)
                  at android.view.View.measure(View.java:22944)
                  at android.support.constraint.ConstraintLayout.internalMeasureChildren(ConstraintLayout.java:1210)
                  at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:1550)
                  at android.view.View.measure(View.java:22944)
                  at android.widget.ScrollView.measureChildWithMargins(ScrollView.java:1308)
                  at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                  at android.widget.ScrollView.onMeasure(ScrollView.java:350)
                  at android.view.View.measure(View.java:22944)
                  at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:1617)
                  at android.view.View.measure(View.java:22944)
                  at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1632)
                  at android.view.View.measure(View.java:22944)
                  at android.support.constraint.ConstraintLayout.onMeasure(ConstraintLayout.java:1617)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6729)
                  at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                  at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:141)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6729)
                  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1513)
                  at android.widget.LinearLayout.measureVertical(LinearLayout.java:805)
                  at android.widget.LinearLayout.onMeasure(LinearLayout.java:684)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6729)
                  at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6729)
                  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1513)
                  at android.widget.LinearLayout.measureVertical(LinearLayout.java:805)
                  at android.widget.LinearLayout.onMeasure(LinearLayout.java:684)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6729)
                  at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
                  at com.android.internal.policy.DecorView.onMeasure(DecorView.java:720)
                  at android.view.View.measure(View.java:22944)
                  at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2687)
                  at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1553)
                  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1824)
                  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1441)
                  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7076)
                  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:935)
                  at android.view.Choreographer.doCallbacks(Choreographer.java:747)
                  at android.view.Choreographer.doFrame(Choreographer.java:682)
                  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:921)
                  at android.os.Handler.handleCallback(Handler.java:819)
                  at android.os.Handler.dispatchMessage(Handler.java:99)
                  at android.os.Looper.loop(Looper.java:164)
                  at android.app.ActivityThread.main(ActivityThread.java:6656)
                  at java.lang.reflect.Method.invoke(Native Method)
                  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
                  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)
I/Process: Sending signal. PID: 4990 SIG: 9
Application terminated.

作者: GUO0630 時間: 2018-5-31 16:39
本帖最後由 GUO0630 於 2018-5-31 21:15 編輯

已解決問題 xml黨裡面有東西錯誤抱歉打擾了

作者: GUO0630 時間: 2018-5-31 16:48
本帖最後由 GUO0630 於 2018-5-31 21:17 編輯

因為LAG多PO的無法刪除...

作者: muska1116 時間: 2018-5-31 21:23
這句其實就是答案了XD
android.support.v7.widget.AppCompatButton cannot be cast to android.widget.ImageView

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