Android 使用片段和图像视图的viewpager内存不足错误
我有一个内存不足的错误，我有一个使用activity not fragments和imageview的viewpager，当我收到这个错误时，我将它改为fragments。。。但这个错误一直显示我尝试了很多解决方案，但都没有奏效 我的代码：Android 使用片段和图像视图的viewpager内存不足错误,android,android-fragments,android-viewpager,android-imageview,Android,Android Fragments,Android Viewpager,Android Imageview,我有一个内存不足的错误，我有一个使用activity not fragments和imageview的viewpager，当我收到这个错误时，我将它改为fragments。。。但这个错误一直显示我尝试了很多解决方案，但都没有奏效 我的代码： public class ScreenSlidePageFragment extends Fragment { public static final String ARG_PAGE = "page"; private int mPageN
public class ScreenSlidePageFragment extends Fragment {
public static final String ARG_PAGE = "page";
private int mPageNumber;
private int[] pics = {R.drawable.intro1, R.drawable.intro2,R.drawable.intro3,R.drawable.intro4,R.drawable.intro5,R.drawable.intro6,R.drawable.intro7,R.drawable.intro8,
R.drawable.intro9,R.drawable.intro10,R.drawable.intro11,R.drawable.intro12,R.drawable.intro13,R.drawable.intro14,R.drawable.intro15,R.drawable.intro16,R.drawable.intro17,R.drawable.intro18,
R.drawable.intro19,R.drawable.intro20,R.drawable.intro21,R.drawable.intro22,R.drawable.intro23,R.drawable.intro24,R.drawable.intro25,R.drawable.intro26,R.drawable.intro27,R.drawable.intro28,R.drawable.intro29,R.drawable.intro30,
R.drawable.intro31,R.drawable.intro32,R.drawable.intro33,R.drawable.intro34,R.drawable.intro35,R.drawable.intro36,R.drawable.intro37,R.drawable.intro38,R.drawable.intro39,R.drawable.intro40,R.drawable.intro41,R.drawable.intro42,
R.drawable.intro43,R.drawable.intro44,R.drawable.intro45,R.drawable.intro46,R.drawable.intro47,R.drawable.intro48,R.drawable.intro49,R.drawable.intro50,R.drawable.intro51,R.drawable.intro52,R.drawable.intro53,R.drawable.intro54,
R.drawable.intro55,R.drawable.intro56,R.drawable.intro57,R.drawable.intro58,R.drawable.intro59,R.drawable.intro60,R.drawable.intro61,R.drawable.intro62,R.drawable.intro63,R.drawable.intro64,R.drawable.intro65,R.drawable.intro66,
R.drawable.intro67,R.drawable.intro68,R.drawable.intro69,R.drawable.intro70,R.drawable.intro71,R.drawable.intro72,R.drawable.intro73};
int count=72;//it's the number of the images-1;
public static ScreenSlidePageFragment create(int pageNumber) {
ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
Bundle args = new Bundle();
args.putInt(ARG_PAGE, pageNumber);
fragment.setArguments(args);
return fragment;
}
public ScreenSlidePageFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mPageNumber = getArguments().getInt(ARG_PAGE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater
.inflate(R.layout.image_view_layout, container, false);
ImageView img=(ImageView) rootView.findViewById(R.id.img_pager);
img.setImageResource(pics[count-mPageNumber]);
return rootView;
}
public int getPageNumber() {
return mPageNumber;
}
}
public class Introduction_Activity extends FragmentActivity {
private static final int NUM_PAGES = 73;
private ViewPager mPager;
private PagerAdapter mPagerAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_introduction);
// Instantiate a ViewPager and a PagerAdapter.
mPager = (ViewPager) findViewById(R.id.imgs_viewpager);
mPagerAdapter = new ScreenSlidePagerAdapter(getSupportFragmentManager());
mPager.setAdapter(mPagerAdapter);
mPager.setCurrentItem(NUM_PAGES-1);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.introduction_, menu);
return true;
}
static class ViewHolder {
ImageView img_view;
}
private class ScreenSlidePagerAdapter extends FragmentStatePagerAdapter {
public ScreenSlidePagerAdapter(FragmentManager fm) {
super(fm);
}
@Override
public Fragment getItem(int position) {
return ScreenSlidePageFragment.create(position);
}
@Override
public int getCount() {
return NUM_PAGES;
}
}
}
10-01 14:44:49.224: E/AndroidRuntime(4770): FATAL EXCEPTION: main
10-01 14:44:49.224: E/AndroidRuntime(4770): java.lang.OutOfMemoryError
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.Bitmap.nativeCreate(Native Method)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:618)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:593)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:445)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:775)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.content.res.Resources.loadDrawable(Resources.java:1968)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.content.res.Resources.getDrawable(Resources.java:677)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.widget.ImageView.resolveUri(ImageView.java:542)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.widget.ImageView.setImageResource(ImageView.java:315)
10-01 14:44:49.224: E/AndroidRuntime(4770): at packagename.ScreenSlidePageFragment.onCreateView(ScreenSlidePageFragment.java:60)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1460)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:911)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1088)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1444)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:461)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:163)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.view.ViewPager.populate(ViewPager.java:1064)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.view.ViewPager.populate(ViewPager.java:911)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.support.v4.view.ViewPager$3.run(ViewPager.java:242)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.os.Handler.handleCallback(Handler.java:605)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.os.Handler.dispatchMessage(Handler.java:92)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.os.Looper.loop(Looper.java:137)
10-01 14:44:49.224: E/AndroidRuntime(4770): at android.app.ActivityThread.main(ActivityThread.java:4514)
10-01 14:44:49.224: E/AndroidRuntime(4770): at java.lang.reflect.Method.invokeNative(Native Method)
10-01 14:44:49.224: E/AndroidRuntime(4770): at java.lang.reflect.Method.invoke(Method.java:511)
10-01 14:44:49.224: E/AndroidRuntime(4770): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
10-01 14:44:49.224: E/AndroidRuntime(4770): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
10-01 14:44:49.224: E/AndroidRuntime(4770): at dalvik.system.NativeStart.main(Native Method)
@Override
public void onDetach(){
super.onDetach();
//img.setImageResource(0);
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.remove(this).commit();
Log.d("was detached","yes");
}
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
public class ScreenSlidePageFragment extends Fragment {
/**
* The argument key for the page number this fragment represents.
*/
public static final String ARG_PAGE = "page";
/**
* The fragment's page number, which is set to the argument value for {@link #ARG_PAGE}.
*/
ImageView img;
int height;
int width;
private int mPageNumber;
private int[] pics = {R.drawable.intro1, R.drawable.intro2,R.drawable.intro3,R.drawable.intro4,R.drawable.intro5,R.drawable.intro6,R.drawable.intro7,R.drawable.intro8,
R.drawable.intro9,R.drawable.intro10,R.drawable.intro11,R.drawable.intro12,R.drawable.intro13,R.drawable.intro14,R.drawable.intro15,R.drawable.intro16,R.drawable.intro17,R.drawable.intro18,
R.drawable.intro19,R.drawable.intro20,R.drawable.intro21,R.drawable.intro22,R.drawable.intro23,R.drawable.intro24,R.drawable.intro25,R.drawable.intro26,R.drawable.intro27,R.drawable.intro28,R.drawable.intro29,R.drawable.intro30,
R.drawable.intro31,R.drawable.intro32,R.drawable.intro33,R.drawable.intro34,R.drawable.intro35,R.drawable.intro36,R.drawable.intro37,R.drawable.intro38,R.drawable.intro39,R.drawable.intro40,R.drawable.intro41,R.drawable.intro42,
R.drawable.intro43,R.drawable.intro44,R.drawable.intro45,R.drawable.intro46,R.drawable.intro47,R.drawable.intro48,R.drawable.intro49,R.drawable.intro50,R.drawable.intro51,R.drawable.intro52,R.drawable.intro53,R.drawable.intro54,
R.drawable.intro55,R.drawable.intro56,R.drawable.intro57,R.drawable.intro58,R.drawable.intro59,R.drawable.intro60,R.drawable.intro61,R.drawable.intro62,R.drawable.intro63,R.drawable.intro64,R.drawable.intro65,R.drawable.intro66,
R.drawable.intro67,R.drawable.intro68,R.drawable.intro69,R.drawable.intro70,R.drawable.intro71,R.drawable.intro72,R.drawable.intro73};
int count=72;//it's the number of the images-1;
/**
* Factory method for this fragment class. Constructs a new fragment for the given page number.
*/
public static ScreenSlidePageFragment create(int pageNumber) {
ScreenSlidePageFragment fragment = new ScreenSlidePageFragment();
Bundle args = new Bundle();
args.putInt(ARG_PAGE, pageNumber);
fragment.setArguments(args);
return fragment;
}
public ScreenSlidePageFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DisplayMetrics displaymetrics = new DisplayMetrics();
getActivity().getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
height = displaymetrics.heightPixels;
width = displaymetrics.widthPixels;
Log.d("width", ""+width);
Log.d("height", ""+height);
mPageNumber = getArguments().getInt(ARG_PAGE);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Resources res = getResources() ;
ViewGroup rootView = (ViewGroup) inflater
.inflate(R.layout.image_view_layout, container, false);
Bitmap btm=decodeSampledBitmapFromResource(res,pics[count-mPageNumber],600,600);
img=(ImageView) rootView.findViewById(R.id.img_pager);
img.setImageBitmap(btm);
return rootView;
}
public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
int reqWidth, int reqHeight) {
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(res, resId, 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) {
// Calculate ratios of height and width to requested height and width
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
// Choose the smallest ratio as inSampleSize value, this will guarantee
// a final image with both dimensions larger than or equal to the
// requested height and width.
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
return inSampleSize;
}
@Override
public void onDetach(){
super.onDetach();
Bitmap bitmap = ((BitmapDrawable)img.getDrawable()).getBitmap();
bitmap.recycle();
//FragmentManager fragmentManager = getFragmentManager();
//FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
//fragmentTransaction.remove(this).commit();
}
/**
* Returns the page number represented by this fragment object.
*/
public int getPageNumber() {
return mPageNumber;
}
}
导入android.content.res.Resources；
导入android.graphics.Bitmap；
导入android.graphics.BitmapFactory；
导入android.graphics.drawable.BitmapDrawable；
导入android.os.Bundle；
导入android.support.v4.app.Fragment；
导入android.util.DisplayMetrics；
导入android.util.Log；
导入android.view.LayoutInflater；
导入android.view.view；
导入android.view.ViewGroup；
导入android.widget.ImageView；
公共类ScreenSlidePageFragment扩展了片段{
/**
*此片段表示的页码的参数键。
*/
公共静态最终字符串ARG_PAGE=“PAGE”；
/**
*片段的页码，设置为{@link#ARG_page}的参数值。
*/
图像视图img；
内部高度；
整数宽度；
私人内部成员；
private int[]pics={R.drawable.intro1，R.drawable.intro2，R.drawable.intro3，R.drawable.intro4，R.drawable.intro5，R.drawable.intro6，R.drawable.intro7，R.drawable.intro8，
可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，可画的，
可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深，
可调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调调，
可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深，
可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深。可拉深，
R.drawable.intro67，R.drawable.intro68，R.drawable.intro69，R.drawable.intro70，R.drawable.intro71，R.drawable.intro72，R.drawable.intro73}；
int count=72；//这是图像的数量-1；
/**
*此片段类的工厂方法。为给定页码构造新片段。
*/
公共静态屏幕SlidePageFragment创建（int页码）{
ScreenSlidePageFragment=新ScreenSlidePageFragment（）；
Bundle args=新Bundle（）；
args.putInt（ARG_页，页码）；
fragment.setArguments（args）；
返回片段；
}
公共屏幕SlidePageFragment（）{
}
@凌驾
创建时的公共void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
DisplayMetrics DisplayMetrics=新的DisplayMetrics（）；
getActivity（）.getWindowManager（）.getDefaultDisplay（）.getMetrics（displaymetrics）；
高度=displaymetrics.heightPixels；
宽度=displaymetrics.widthPixels；
对数d（“宽度”，“宽度+宽度”）；
对数d（“高度”，“高度+高度”）；
mpagunmber=getArguments（）.getInt（ARG_页）；
}
@凌驾
创建视图上的公共视图（布局、充气机、视图组容器、，
Bundle savedInstanceState）{
Resources res=getResources（）；
视图组根视图=（视图组）充气器
.充气（右布局、图像视图布局、容器、假）；
位图btm=decodeSampledBitmapFromResource（res，pics[count mpagunmber]，600600）；
img=（ImageView）rootView.findviewbyd（R.id.img_pager）；
设置图像位图（btm）；
返回rootView；
}
公共静态位图解码SampledBitMapFromResource，
输入要求宽度，输入要求高度）{
//使用INJUSTDECBOUNDS首次解码=true检查尺寸
final BitmapFactory.Options=new BitmapFactory.Options（）；
options.inJustDecodeBounds=true；
解码资源（res、resId、options）；
//计算样本大小
options.inSampleSize=计算样本大小（options、reqWidth、reqHeight）；
//使用inSampleSize集合解码位图
options.inJustDecodeBounds=false；
返回BitmapFactory.decodeResource（res、resId、options）；
}
公共静态整数计算示例大小(
BitmapFactory.Options选项、int reqWidth、int reqHeight）{
//图像的原始高度和宽度
最终内部高度=options.outHeight；
最终整数宽度=options.outWidth；
int inSampleSize=1；
如果（高度>要求高度| |宽度>要求宽度）{
//计算高度和宽度与所需高度和宽度的比率
最终内部高度比=数学圆（（浮动）高度/（浮动）要求高度）；
最终整数宽度比=数学圆（（浮动）宽度/（浮动）宽度）；
//选择最小比率作为采样值，这将保证
//最终图像的两个尺寸均大于或等于
//要求的高度和宽度。
inSampleSize=高度比<宽度比？高度比：宽度比；
}
返回样本大小；
}
@凌驾
公共无效连接（）{
super.onDetach（）；
位图位图=（（BitmapDrawable）img.getDrawable（））.getBit
public class Animals extends Activity{
private static final String POS = "PosAnimals";
private static ViewPager viewPager;
private SharedPreferences mySharedPreferences;
private Context context;
boolean flag;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
AnotherAnotherOneAdapter pagerAdapter = new AnotherAnotherOneAdapter();
viewPager = (ViewPager) findViewById(R.id.pager);
viewPager.setAdapter(pagerAdapter);
viewPager.setCurrentItem(0);
WindowManager.LayoutParams params = getWindow().getAttributes();
params.flags |= LayoutParams.FLAG_KEEP_SCREEN_ON;
params.screenBrightness = -1f;
getWindow().setAttributes(params);
}
public void onResume() {
super.onResume();
context = getApplicationContext();
mySharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
viewPager.setCurrentItem(mySharedPreferences.getInt(POS, 0));
}
public void onPause(){
context = getApplicationContext();
mySharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
Editor editor = mySharedPreferences.edit();
editor.putInt(POS, viewPager.getCurrentItem());
editor.commit();
super.onPause();
}
public class AnotherAnotherOneAdapter extends PagerAdapter {
private int[] mImages = new int[] {
R.drawable.anim1,
R.drawable.anim2,
R.drawable.anim3,
R.drawable.anim4,
R.drawable.anim5,
R.drawable.anim6,
R.drawable.anim7,
R.drawable.anim8,
R.drawable.anim9,
R.drawable.anim10,
R.drawable.anim11,
R.drawable.anim12,
R.drawable.anim13,
R.drawable.anim14
};
public Object instantiateItem(View collection, int position){
Context context = Animals.this;
ImageView imageView = new ImageView(context);
imageView.setImageResource(mImages[position]);
imageView.setScaleType(ScaleType.FIT_XY);
((ViewPager) collection).addView(imageView, 0);
return imageView;
}
public void destroyItem(View collection, int position, Object view){
((ViewPager) collection).removeView((ImageView) view);
}
public int getCount(){
return mImages.length;
}
public boolean isViewFromObject(View view, Object object){
return view == ((ImageView) object);
}
public void finishUpdate(View arg0){
}
public void restoreState(Parcelable arg0, ClassLoader arg1){
}
public Parcelable saveState(){
return null;
}
public void startUpdate(View arg0){
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<android.support.v4.view.ViewPager
android:id="@+id/pager"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</RelativeLayout>