Android AsyncTask OutOfMemoryError:位图大小超过VM预算
必须将所有SD卡图像加载到交错视图中。当我设置计数100时,显示交错视图中的图像,但对于许多图像(例如700/800),我使用异步任务,但显示doinbackground错误。请帮助我解决此问题Android AsyncTask OutOfMemoryError:位图大小超过VM预算,android,android-asynctask,image-gallery,staggered-gridview,Android,Android Asynctask,Image Gallery,Staggered Gridview,必须将所有SD卡图像加载到交错视图中。当我设置计数100时,显示交错视图中的图像,但对于许多图像(例如700/800),我使用异步任务,但显示doinbackground错误。请帮助我解决此问题 import android.content.Context; import android.database.Cursor; import android.graphics.Bitmap; import android.os.AsyncTask; import android.os.Bundle; i
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity
{
private StaggeredGridLayoutManager staggeredGridLayoutManager;
MyAdapter myAdapter;
List<ItemData> grid_view_item = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
//call the LoadImage
new LoadImage().execute();
myAdapter = new MyAdapter(MainActivity.this, grid_view_item);
recyclerView.setAdapter(myAdapter);
}
导入android.content.Context;
导入android.database.Cursor;
导入android.graphics.Bitmap;
导入android.os.AsyncTask;
导入android.os.Bundle;
导入android.provider.MediaStore;
导入android.support.v7.app.AppActivity;
导入android.support.v7.widget.RecyclerView;
导入android.support.v7.widget.StaggedGridLayoutManager;
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;
导入java.util.ArrayList;
导入java.util.List;
公共类MainActivity扩展了AppCompatActivity
{
私人StaggedGridLayoutManager StaggedGridLayoutManager;
我的适配器我的适配器;
List grid_view_item=new ArrayList();
@凌驾
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView RecyclerView=(RecyclerView)findViewById(R.id.RecyclerView);
recyclerView.setHasFixedSize(true);
StaggedGridLayoutManager=新的StaggedGridLayoutManager(2,StaggedGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(StaggedGridLayoutManager);
//调用LoadImage
新建LoadImage().execute();
myAdapter=新的myAdapter(MainActivity.this,grid\u view\u项);
recyclerView.setAdapter(myAdapter);
}
这是AsncTask类
class LoadImage extends AsyncTask<Void,Void,Void>
{
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
@Override
protected Void doInBackground(Void... params)
{
//load gallery iamges
final String[] columns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID};
final String orderBy = MediaStore.Images.Media._ID;
Cursor imagecursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
Log.e("COUNT ", "" + image_column_index);
this.count = imagecursor.getCount();
Log.e("COUNT ", "" + count);
this.thumbnails = new Bitmap[this.count];
Log.e("COUNT ", "" + thumbnails);
this.arrPath = new String[this.count];
Log.e("COUNT ", "" + arrPath);
this.thumbnailsselection = new boolean[this.count];
Log.e("COUNT ", "" + thumbnailsselection);
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail(
getApplicationContext().getContentResolver(), id,
MediaStore.Images.Thumbnails.MINI_KIND, null);
arrPath[i] = imagecursor.getString(dataColumnIndex);
grid_view_item.add(new ItemData(thumbnails[i]));
}
return null;
}
}
class LoadImage扩展了异步任务
{
私人整数计数;
私人位图[]缩略图;
私有布尔[]缩略图选择;
私有字符串[]路径;
@凌驾
受保护的Void doInBackground(Void…参数)
{
//加载通道直径
最终字符串[]列={MediaStore.Images.Media.DATA,MediaStore.Images.Media.\u ID};
最终字符串orderBy=MediaStore.Images.Media.\u ID;
游标imagecursor=managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,列,null,
null,orderBy);
int image\u column\u index=imagecursor.getColumnIndex(MediaStore.Images.Media.ID);
Log.e(“计数”,“图像+列+索引”);
this.count=imagecursor.getCount();
Log.e(“计数”,“计数+计数”);
this.thumbnails=新位图[this.count];
Log.e(“计数”和“+缩略图);
this.arrPath=新字符串[this.count];
Log.e(“计数”和“+arrPath);
this.thumbnailsselection=新布尔值[this.count];
Log.e(“计数”、“指纹选择”);
for(int i=0;i
这是适配器类
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder>
{
private List<ItemData> itemsData;
private Context context;
public MyAdapter(Context context, List<ItemData> itemsData)
{
this.itemsData = itemsData;
this.context = context;
}
@Override
public int getItemCount() {
return this.itemsData.size();
}
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View itemLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.staggered_view_image, null);
// create ViewHolder
ViewHolder viewHolder = new ViewHolder(itemLayoutView);
return viewHolder;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
viewHolder.img.setImageBitmap(itemsData.get(position).getImage());
}
// inner class to hold a reference to each item of RecyclerView
public class ViewHolder extends RecyclerView.ViewHolder {
public ImageView img;
public ViewHolder(View itemLayoutView) {
super(itemLayoutView);
img = (ImageView) itemLayoutView.findViewById(R.id.gallery_photo);
}
}
}
}
公共类MyAdapter扩展了RecyclerView.Adapter
{
私人清单项目数据;
私人语境;
公共MyAdapter(上下文上下文,列表项数据)
{
this.itemsData=itemsData;
this.context=上下文;
}
@凌驾
public int getItemCount(){
返回此.itemsData.size();
}
@凌驾
public MyAdapter.ViewHolder onCreateViewHolder(视图组父级,
int视图类型){
//创建新视图
View itemLayoutView=LayoutFlater.from(parent.getContext())
.充气(右布局交错视图图像,空);
//创建视图持有者
ViewHolder ViewHolder=新的ViewHolder(itemLayoutView);
返回视图持有者;
}
//替换视图的内容(由布局管理器调用)
@凌驾
公共无效onBindViewHolder(ViewHolder ViewHolder,最终int位置){
viewHolder.img.setImageBitmap(itemsData.get(position.getImage());
}
//用于保存对RecyclerView的每个项的引用的内部类
公共类ViewHolder扩展了RecyclerView.ViewHolder{
公共图像视图img;
公共视图持有者(视图项布局视图){
超级(itemLayoutView);
img=(ImageView)itemLayoutView.findViewById(R.id.gallery\U照片);
}
}
}
}
LogCat
1
12-30 08:49:50.329 2902-2935/com.staggeredgridview E/COUNT: 775
12-30 08:49:50.329 2902-2935/com.staggeredgridview E/COUNT: [Landroid.graphics.Bitmap;@40513478
12-30 08:49:50.329 2902-2935/com.staggeredgridview E/COUNT: [Ljava.lang.String;@405187f8
12-30 08:49:50.329 2902-2935/com.staggeredgridview E/COUNT: [Z@4053aa88
12-30 08:50:24.319 2902-2935/com.staggeredgridview E/dalvikvm-heap: 153600-byte external allocation too large for this process.
12-30 08:50:24.369 2902-2935/com.staggeredgridview E/GraphicsJNI: VM won't let us allocate 153600 bytes
12-30 08:50:24.369 2902-2935/com.staggeredgridview D/skia: libjpeg error 105 < Ss=%d, Se=%d, Ah=%d, Al=%d> from allocPixelRef [320 240]
12-30 08:50:24.369 2902-2935/com.staggeredgridview D/skia: --- decoder->decode returned false
12-30 08:50:24.369 2902-2935/com.staggeredgridview E/MediaStore: failed to allocate memory for thumbnail content://media/external/images/thumbnails/615; java.lang.OutOfMemoryError: bitmap size exceeds VM budget
12-30 08:50:24.539 2902-2935/com.staggeredgridview E/dalvikvm-heap: 153600-byte external allocation too large for this process.
12-30 08:50:24.589 2902-2935/com.staggeredgridview E/GraphicsJNI: VM won't let us allocate 153600 bytes
12-30 08:50:24.589 2902-2935/com.staggeredgridview D/skia: libjpeg error 105 < Ss=%d, Se=%d, Ah=%d, Al=%d> from allocPixelRef [320 240]
12-30 08:50:24.589 2902-2935/com.staggeredgridview D/skia: --- decoder->decode returned false
12-30 08:50:24.589 2902-2935/com.staggeredgridview E/MediaStore: failed to allocate memory for thumbnail content://media/external/images/thumbnails/615; java.lang.OutOfMemoryError: bitmap size exceeds VM budget
12-30 08:50:24.599 2902-2935/com.staggeredgridview V/MediaStore: Create the thumbnail in memory: origId=639, kind=1, isVideo=false
12-30 08:50:24.749 2902-2935/com.staggeredgridview E/dalvikvm-heap: 307200-byte external allocation too large for this process.
12-30 08:50:24.799 2902-2935/com.staggeredgridview E/GraphicsJNI: VM won't let us allocate 307200 bytes
12-30 08:50:24.799 2902-2935/com.staggeredgridview D/skia: libjpeg error 105 < Ss=%d, Se=%d, Ah=%d, Al=%d> from allocPixelRef [320 240]
12-30 08:50:24.799 2902-2935/com.staggeredgridview D/skia: --- decoder->decode returned false
12-30 08:50:24.809 2902-2935/com.staggeredgridview W/dalvikvm: threadid=9: thread exiting with uncaught exception (group=0x40018578)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: java.lang.RuntimeException: An error occured while executing doInBackground()
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.os.AsyncTask$3.done(AsyncTask.java:200)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:274)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask.setException(FutureTask.java:125)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:308)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:138)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.lang.Thread.run(Thread.java:1019)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:508)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.media.ThumbnailUtils.createThumbnailFromEXIF(ThumbnailUtils.java:489)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.media.ThumbnailUtils.createImageThumbnail(ThumbnailUtils.java:102)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.provider.MediaStore$InternalThumbnails.getThumbnail(MediaStore.java:455)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.provider.MediaStore$Images$Thumbnails.getThumbnail(MediaStore.java:791)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at com.staggeredgridview.MainActivity$LoadImage.doInBackground(MainActivity.java:73)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at com.staggeredgridview.MainActivity$LoadImage.doInBackground(MainActivity.java:42)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at android.os.AsyncTask$2.call(AsyncTask.java:185)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.FutureTask.run(FutureTask.java:138)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
12-30 08:50:24.829 2902-2935/com.staggeredgridview E/AndroidRuntime: at java.lang.Thread.run(Thread.java:1019)
1
12-30 08:49:50.329 2902-2935/com.edgridview E/COUNT:775
12-30 08:49:50.329 2902-2935/com.edgridview E/COUNT:[Landroid.graphics.Bitmap;@40513478
12-30 08:49:50.329 2902-2935/com.edgridview E/COUNT:[Ljava.lang.String;@405187f8
12-30 08:49:50.329 2902-2935/com.edgridview E/COUNT:[Z@4053aa88
12-30 08:50:24.319 2902-2935/com.edgridview E/dalvikvm堆:153600字节的外部分配对此进程太大。
12-30 08:50:24.369 2902-2935/com.edgridview E/GraphicsJNI:VM不允许我们分配153600字节
12-30 08:50:24.369 2902-2935/com.edgridview D/skia:li
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.staggeredgridview" >
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:largeHeap="true"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private int count;
private Bitmap[] thumbnails;
private boolean[] thumbnailsselection;
private String[] arrPath;
private StaggeredGridLayoutManager staggeredGridLayoutManager;
MyAdapter myAdapter;
List<ItemData> grid_view_item = new ArrayList<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
recyclerView.setHasFixedSize(true);
staggeredGridLayoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
myAdapter = new MyAdapter(MainActivity.this, grid_view_item);
recyclerView.setAdapter(myAdapter);
//load gallery iamges
final String[] columns = {MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID};
final String orderBy = MediaStore.Images.Media._ID;
Cursor imagecursor = managedQuery(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null,
null, orderBy);
int image_column_index = imagecursor.getColumnIndex(MediaStore.Images.Media._ID);
Log.e("COUNT ", "" + image_column_index);
this.count = imagecursor.getCount();
Log.e("COUNT ", "" + count);
this.thumbnails = new Bitmap[this.count];
Log.e("COUNT ", "" + thumbnails);
this.arrPath = new String[this.count];
Log.e("COUNT ", "" + arrPath);
this.thumbnailsselection = new boolean[this.count];
Log.e("COUNT ", "" + thumbnailsselection);
for (int i = 0; i < this.count; i++) {
imagecursor.moveToPosition(i);
int id = imagecursor.getInt(image_column_index);
int dataColumnIndex = imagecursor.getColumnIndex(MediaStore.Images.Media.DATA);
thumbnails[i] = MediaStore.Images.Thumbnails.getThumbnail(
getApplicationContext().getContentResolver(), id,
MediaStore.Images.Thumbnails.MINI_KIND, null);
arrPath[i] = imagecursor.getString(dataColumnIndex);
grid_view_item.add(new ItemData(thumbnails[i]));
}
}
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private List<ItemData> itemsData;
private Context context;
public MyAdapter(Context context, List<ItemData> itemsData) {
this.itemsData = itemsData;
this.context = context;
}
@Override
public int getItemCount() {
return this.itemsData.size();
}
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View itemLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.staggered_view_image, null);
// create ViewHolder
ViewHolder viewHolder = new ViewHolder(itemLayoutView);
return viewHolder;
}
// Replace the contents of a view (invoked by the layout manager)
@Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
viewHolder.img.setImageBitmap(itemsData.get(position).getImage());
}
// inner class to hold a reference to each item of RecyclerView
public class ViewHolder extends RecyclerView.ViewHolder {
public ImageView img;
public ViewHolder(View itemLayoutView) {
super(itemLayoutView);
img = (ImageView) itemLayoutView.findViewById(R.id.gallery_photo);
}
}
}
}
<application
android:icon="@mipmap/ic_launcher"
android:largeHeap="true"
android:theme="@style/AppTheme" >
<activity
.....
....../>
....
...
<application/>