Question

我最近尝试在我的Android应用程序中添加一个RecycleView，从那以后，Demo应用程序只是拒绝在模拟器上打开，所有代码编译，我无法找到我出错的区域，帖子不好相关（我认为，因为我不确定是否错误）下面的代码，但也会提供项目的下载链接，以防任何人更容易。

我知道有很多代码，但我非常难以理解这出错的地方并导致演示应用程序根本无法工作，我相当肯定它位于RecycleView内但又一次，我真的不知道是什么，所以任何非常感谢指导

下载链接https://www.dropbox.com/s/7uott0yaiktieym/JavaMini.zip?dl=0

图像列表适配器类

import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;


public class ImageListAdapter
    extends RecyclerView.Adapter<ImageListAdapter.ViewHolder> {

public class ViewHolder extends RecyclerView.ViewHolder {
    TextView imageTitle;
    ImageView mainImage;

    public ViewHolder(View itemView) {
        super(itemView);
        imageTitle = (TextView) itemView.findViewById(R.id.imageTitle);
        mainImage = (ImageView) itemView.findViewById(R.id.mainImage);
    }
}
public ArrayList<String> imageList = new ArrayList<String>();

//context
private Context context;

 public ImageListAdapter(Context context) { this.context = context;}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(context).inflate(R.layout.cell_image_card, 
parent, false);

            ImageListAdapter.ViewHolder vh = new 
ImageListAdapter.ViewHolder(v);
    return vh;
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {

    String image = imageList.get(position);

    holder.imageTitle.setText(image);
}

@Override
public int getItemCount() {
    return 5;
}
}

MainActivity

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ImageView;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

private RecyclerView recyclerView;
private LinearLayoutManager layoutManager;
private ImageListAdapter adapter;



@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.cell_image_card);

    recyclerView = (RecyclerView) findViewById(R.id.imageList);
    layoutManager = new LinearLayoutManager(this);
    layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    recyclerView.setLayoutManager(layoutManager);

    adapter = new ImageListAdapter(this);
    recyclerView.setAdapter(adapter);
}
}

activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1"
android:orientation="vertical">

<android.support.constraint.ConstraintLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/imageList"
        android:layout_width="361dp"
        android:layout_height="484dp"
        android:layout_marginBottom="16dp"
        android:layout_marginEnd="16dp"
        android:layout_marginLeft="16dp"
        android:layout_marginRight="16dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="16dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.0">

    </android.support.v7.widget.RecyclerView>
</android.support.constraint.ConstraintLayout>
</LinearLayout>

“演示应用程序已停止”但代码编译良好？

0 个答案: