第一张照片出来了。当我滑动屏幕时，第二张图片出现，然后崩溃

Question

下面的错误

package com.mobilprogramlar.viewpager_1;

import android.content.Context;
//import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import androidx.viewpager.widget.PagerAdapter;


public class SliderAdapter extends PagerAdapter {

    Context context;


    int[] img = {R.drawable.foraritdizi1,R.drawable.forbaginti,R.drawable.forbasit1,
            R.drawable.forbinom1,R.drawable.forbolme1,R.drawable.ic_launcher_foreground};

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

    @Override
    public int getCount() {
        return img.length;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {

        return view == object;
    }

    @Override
    public Object instantiateItem(ViewGroup container, int position) {

        ImageView imageView;

        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

        View itemView = inflater.inflate(R.layout.slider_item,container,false);

        imageView = itemView.findViewById(R.id.slider_image_view);

        Toast.makeText(context,"position:"+position,Toast.LENGTH_LONG).show();
        **imageView.setImageResource(img[position]);**
        //imageView.setImageResource(img.get(position).getImage_drawable());

        //imageView.setImageResource(img[position]);

        Log.d("tag","Image Position -> " + img[position]);
        container.addView(itemView);
        return itemView;

    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView((LinearLayout) object);
    }
}

import androidx.appcompat.app.AppCompatActivity;
import androidx.viewpager.widget.ViewPager;

import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager_slider);

        viewPager.setAdapter(new SliderAdapter(MainActivity.this));
    }
}

html lang-html prettyprint-override"><?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".MainActivity">

    <!--android.support.v4.view.ViewPager-->
    <androidx.viewpager.widget.ViewPager
        android:id="@+id/view_pager_slider"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

第一张照片出来了。当我滑动屏幕，第二张图片出来，然后崩溃。

ImageView.SetImageResource(img[position])；行显示错误。

Answer 1

您正在使用大图像大小

int[] img = {R.drawable.foraritdizi1,R.drawable.forbaginti,R.drawable.forbasit1,
            R.drawable.forbinom1,R.drawable.forbolme1,R.drawable.ic_launcher_foreground};

这会导致java.lang.OutOfMemoryError。尝试减少这些图像的大小，并在清单中添加

<application
        android:hardwareAccelerated="true"
        android:largeHeap="true"
        >