Android 图库视图不断崩溃并且滚动非常缓慢。我的代码有什么问题

Question

基本上，我有一个简单的画廊视图，可以滚动浏览图像列表，但是当我在三星 Galaxy s3 mini（不是模拟器）上运行该程序时，当我滑动时它滚动浏览图像的速度非常慢并且有很多滞后.我滚动几秒钟后它也会崩溃。我究竟做错了什么？？？我最终想将它实现到另一个具有更多图像和更多滚动的应用程序中。这应该可以工作，因为我使用的是我的手机而不是模拟器，所以它不应该是性能问题。它在代码中。在我的 logcat 中，它说“致命信号 11”有人可以帮忙吗？这是我的代码。

列表适配器：

package com.example.nowlpractice;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;

public class GalleryImageAdapter extends BaseAdapter 
{
private Context mContext;

private Integer[] mImageIds = {
        R.drawable.pic1,
        R.drawable.pic2,
        R.drawable.pic3,
        R.drawable.pic4,
        R.drawable.pic5,
        R.drawable.koala,
};

public GalleryImageAdapter(Context context) 
{
    mContext = context;
}

public int getCount() {
    return mImageIds.length;
}

public Object getItem(int position) {
    return position;
}

public long getItemId(int position) {
    return position;
}


// Override this method according to your need
public View getView(int index, View view, ViewGroup viewGroup) 
{
    // TODO Auto-generated method stub
    ImageView i = new ImageView(mContext);

    i.setImageResource(mImageIds[index]);
    i.setLayoutParams(new Gallery.LayoutParams(200, 200));

    i.setScaleType(ImageView.ScaleType.FIT_XY);

    return i;
}
}

活动：

package com.example.nowlpractice;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;

public class NwActivity extends Activity 
{

 ImageView selectedImage;  
 private Integer[] mImageIds = {
            R.drawable.pic1,
            R.drawable.pic2,
            R.drawable.pic3,
            R.drawable.koala,
            R.drawable.pic5,
            R.drawable.pic4,
    };
@Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_nw);

         Gallery gallery = (Gallery) findViewById(R.id.gallery1);
    selectedImage=(ImageView)findViewById(R.id.imageView1);
    gallery.setSpacing(1);
    gallery.setAdapter(new GalleryImageAdapter(this));

     // clicklistener for Gallery
    gallery.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
            Toast.makeText(NwActivity.this, "Your selected position = " + position,           
Toast.LENGTH_SHORT).show();
            // show the selected Image
            selectedImage.setImageResource(mImageIds[position]);
        }
    });
}
}

和 XML：

<Gallery
    android:id="@+id/gallery1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

 <ImageView
    android:id="@+id/imageView1"
    android:layout_marginTop="100dp"
    android:layout_width="250dp"
    android:layout_gravity="center_horizontal"
    android:layout_height="250dp"
    android:src="@drawable/pic1" />

 </LinearLayout>

这是我的 LOGCAT

07-17 12:24:11.360: I/dalvikvm(13610):   at   
android.view.Choreographer.doCallbacks(Choreographer.java:555)
07-17 12:24:11.360: I/dalvikvm(13610):   at   
android.view.Choreographer.doFrame(Choreographer.java:523)
07-17 12:24:11.360: I/dalvikvm(13610):   at 
android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
07-17 12:24:11.360: I/dalvikvm(13610):   at 
android.os.Handler.handleCallback(Handler.java:615)
07-17 12:24:11.360: I/dalvikvm(13610):   at a
android.os.Handler.dispatchMessage(Handler.java:92)
07-17 12:24:11.360: I/dalvikvm(13610):   at android.os.Looper.loop(Looper.java:137)
07-17 12:24:11.360: I/dalvikvm(13610):   at   
android.app.ActivityThread.main(ActivityThread.java:4867)
07-17 12:24:11.360: I/dalvikvm(13610):   at   
java.lang.reflect.Method.invokeNative(Native Method)
07-17 12:24:11.360: I/dalvikvm(13610):   at j   
java.lang.reflect.Method.invoke(Method.java:511)
07-17 12:24:11.360: I/dalvikvm(13610):   at  
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1007)
07-17 12:24:11.360: I/dalvikvm(13610):   at   
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:774)
07-17 12:24:11.360: I/dalvikvm(13610):   at dalvik.system.NativeStart.main(Native    
Method)
07-17 12:24:11.360: A/libc(13610): Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1),    
thread     
13610 (le.nowlpractice)

Answer 1

你的 logcat 看起来像 OutOfMemory

只是一些问题： 你的图片尺寸是多少？

您是否尝试过不使用 imageView 而是使用 TextView？..（仅用于测试）

你在 Galaxy s3 mini 上的版本是什么？

当然，即使功能相似，也请尝试使用 viewpager...

Answer 2

替换这个构造函数

mContext = context;
   TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
            itemBackground = a.getResourceId(
                    R.styleable.Gallery1_android_galleryItemBackground, 0);
            a.recycle();public GalleryImageAdapter(Context context) 

create like this resource 

 <resources>
     <declare-styleable name="Gallery1">
      <attr name="android:galleryItemBackground"></attr>
    </declare-styleable>
  </resources>