我按照此链接中的示例进行操作： Viewpager Example in android
它的工作正常但是当我放置我自己的高分辨率图像（大尺寸）时，它给了我例外：
java.lang.OutOfMemoryError：位图大小超过VM预算。
我发布了一个关于该问题的旧问题，但由于这个原因，它关闭了它的重复，我尝试并搜索了很多，最后我发现解决方案是：通过以下方式缩放我的图像以避免内存异常：
作者在stackfllow和android开发网站的建议和答案，我以波纹管代码结束，这也以同样的例外结束，我认为我的代码中有一些错误因为我还在学习java和android开发，但那是什么我可以结束，欢迎任何帮助或建议，
谢谢。
我的代码：
ViewPagerAdapter
public class ViewPagerAdapter extends PagerAdapter {
Activity activity;
int imageArray[];
public ViewPagerAdapter(Activity act, int[] imgArra) {
imageArray = imgArra;
activity = act;
}
public int getCount() {
return imageArray.length;
}
public Object instantiateItem(View collection, int position) {
ImageView view = new ImageView(activity);
view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
LayoutParams.MATCH_PARENT));
view.setScaleType(ScaleType.FIT_XY);
view.setBackgroundResource(imageArray[position]);
((ViewPager) collection).addView(view, 0);
return view;
}
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager) arg0).removeView((View) arg2);
}
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0 == ((View) arg1);
}
@Override
public Parcelable saveState() {
return null;
}
public static Bitmap decodeSampledBitmapFromResource(String imageArra,
int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imageArra, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(imageArra, options);
}
public static int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float)height / (float)reqHeight);
} else {
inSampleSize = Math.round((float)width / (float)reqWidth);
}
}
return inSampleSize;}}
PageIndicatorActivity ：
public class PageIndicatorActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPagerAdapter adapter = new ViewPagerAdapter(this, imageArra);
ViewPager myPager = (ViewPager) findViewById(R.id.myfivepanelpager);
myPager.setAdapter(adapter);
myPager.setCurrentItem(0);
}
private int imageArra[] = { R.drawable.one, R.drawable.two,
R.drawable.three, R.drawable.four,
R.drawable.five, R.drawable.six,
R.drawable.seven, R.drawable.eight,R.drawable.nine,
R.drawable.ten }; }
logcat堆栈：
FATAL EXCEPTION: main
java.lang.OutOfMemoryError: bitmap size exceeds VM budget
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:563)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:439)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
at android.content.res.Resources.loadDrawable(Resources.java:1709)
at android.content.res.Resources.getDrawable(Resources.java:581)
at android.view.View.setBackgroundResource(View.java:7586)
at com.horizontalscrollviewwithpageindicator.ViewPagerAdapter.instantiateItem
(ViewPagerAdapter.java:33)
at android.support.v4.view.PagerAdapter.instantiateItem(PagerAdapter.java:110)
at android.support.v4.view.ViewPager.addNewItem(ViewPager.java:692)
at android.support.v4.view.ViewPager.populate(ViewPager.java:875)
at android.support.v4.view.ViewPager.populate(ViewPager.java:772)
at android.support.v4.view.ViewPager.onMeasure(ViewPager.java:1234)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8366)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
at android.view.View.measure(View.java:8366)
at android.view.ViewRoot.performTraversals(ViewRoot.java:844)
at android.view.ViewRoot.handleMessage(ViewRoot.java:1865)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：1)
请尝试以下提示。
- Android适用于.png张图片，其中.jpg格式的相同尺寸图片会创建OutOfMemoryError。< / p>
请参阅此链接以获取官方Android开发者网站的解决方案：
http://developer.android.com/training/displaying-bitmaps/load-bitmap.html
答案 1 :(得分：0)
你永远不会使用这种方法来缩放图像，你的inSampleSize也需要是2的幂（我相信）。这些图像太大了（你在上一篇文章中说过的是4.5 MB）。在存储的巨大位图之上，视图寻呼机在任何给定时间在内存中保留3个视图。为视图寻呼机分配的内存类似于> 13.5mb。使用以下内容替换实例化视图：
ImageView myView = new ImageView(context);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 4;
Bitmap bitmap = BitmapFactory.decodeResource(activity.getResouces(), imageArray[position], options );
myView.setImageBitmap(bitmap);
((ViewPager) view).addView(myView);
return myView;
如果仍然提供错误，请使用options.inSampleSize = 8;