更新时间：10/12/2012
制作图像后：
WeakHashMap<Bitmap, WeakReference<Bitmap>> objReferenciaDebilBitmaps;
Bitmap imagen = datossss.getImagen();
objreCReferencias.RegristrarReferenciaDebilBitmap(imagen, objReferenciaDebilBitmaps);
我的班级Creferencias
public class CReferencias {
public CReferencias(){
}
public void RegristrarReferenciaDebilBitmap(Bitmap img, WeakHashMap<Bitmap, WeakReference<Bitmap>> objReferenciaDebilBitmaps){
WeakReference<Bitmap> objrererencia1 = new WeakReference<Bitmap>(img);
objReferenciaDebilBitmaps.put(img, objrererencia1);
}
每次使用此功能后我都会创建一个Image，我不知道它是否是使用弱位图引用的正确方法，
但仍然给我一个问题sigiente
这是我的logcat
12-10 13:54:53.523: E/dalvikvm-heap(1211): Out of memory on a 2304016-byte allocation.
12-10 13:54:53.528: E/AndroidRuntime(1211): FATAL EXCEPTION: main
12-10 13:54:53.528: E/AndroidRuntime(1211): java.lang.OutOfMemoryError
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.graphics.Bitmap.nativeCreate(Native Method)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
12-10 13:54:53.528: E/AndroidRuntime(1211): at dep.Agenda.CustomAdapterDetalleEventos.getView(CustomAdapterDetalleEventos.java:558)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.HeaderViewListAdapter.getView(HeaderViewListAdapter.java:220)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.AbsListView.obtainView(AbsListView.java:2201)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.ListView.makeAndAddView(ListView.java:1774)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.ListView.fillUp(ListView.java:705)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.ListView.fillGap(ListView.java:645)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.AbsListView.trackMotionScroll(AbsListView.java:5263)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.widget.AbsListView$TwFlingRunnable.run(AbsListView.java:4156)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.os.Handler.handleCallback(Handler.java:605)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.os.Handler.dispatchMessage(Handler.java:92)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.os.Looper.loop(Looper.java:137)
12-10 13:54:53.528: E/AndroidRuntime(1211): at android.app.ActivityThread.main(ActivityThread.java:4507)
12-10 13:54:53.528: E/AndroidRuntime(1211): at java.lang.reflect.Method.invokeNative(Native Method)
12-10 13:54:53.528: E/AndroidRuntime(1211): at java.lang.reflect.Method.invoke(Method.java:511)
12-10 13:54:53.528: E/AndroidRuntime(1211): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)
12-10 13:54:53.528: E/AndroidRuntime(1211): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:747)
12-10 13:54:53.528: E/AndroidRuntime(1211): at dalvik.system.NativeStart.main(Native Method)
这是我的适配器
public View getView(final int position, View convertView, ViewGroup parent){
View vistaFila =null;
final ElementosLinea objelementos;//=null;
//final ElementosLinea obj;
//final View auxVistaFila=null;
LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
// LayoutInflater inflator = context.getLayoutInflater();
//LayoutInflater vi = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
vistaFila = vi.inflate(R.layout.ll_lineas_lista_detalle_evento_nueva, null);
//AsignarElementos(vistaFila);
objelementos = new ElementosLinea();
AsignarElementos(vistaFila,objelementos);
vistaFila.setTag(objelementos);
objelementos.posicion= position;
}else{
//vistaFila = vi.inflate(R.layout.ll_lineas_lista_detalles_evento, null);
vistaFila=convertView;
objelementos=(ElementosLinea)convertView.getTag();
objelementos.posicion= position;
}
DetalleEvento datossss = arrayDatos.get(position);
if (datossss.getGusta()==0){
objelementos.btnMegusta.setBackgroundResource(R.drawable.megustagris);
objelementos.txtMegusta.setText("Me gusta");
}else{
objelementos.btnMegusta.setBackgroundResource(R.drawable.megustaazul);
objelementos.txtMegusta.setText("No me gusta");
}
//llenamos la barra de progreso
if (datossss.getTipo()==1){//SI ES UN VIDEO
objelementos.txtTitulo.setText(datossss.getTituloPost());
objelementos.txtAutor.setText(datossss.getAutor());
objelementos.txtPost.setVisibility(View.INVISIBLE);
if (datossss.getImagen()!=null){
Bitmap imagen = datossss.getImagen();
objreCReferencias.RegristrarReferenciaDebilBitmap(imagen, objReferenciaDebilBitmaps);
int width = imagen.getWidth();
int height = imagen.getHeight();
int newWidth = activiadPricipal.getWindowManager().getDefaultDisplay().getWidth();
int newHeight = newWidth-80;
float scalarw=((float) newWidth) /width;
float scalarh=((float) newHeight) /height;
Matrix ma = new Matrix();
ma.postScale(scalarw, scalarh);
Bitmap res = Bitmap.createBitmap(imagen, 0, 0,
width, height, ma, true);
objreCReferencias.RegristrarReferenciaDebilBitmap(res, objReferenciaDebilBitmaps);
objelementos.imgfotoVideo.setImageBitmap(res);
//imagen.recycle();
//res.recycle();
objelementos.btnComentarios.setEnabled(true);
objelementos.pgrprogreso.setVisibility(View.INVISIBLE);
}else{
int newWidth = activiadPricipal.getWindowManager().getDefaultDisplay().getWidth();
int newHeight = newWidth-80;
objelementos.imgfotoVideo.setImageBitmap(null);
objelementos.imgfotoVideo.setMinimumHeight(newHeight);
objelementos.imgfotoVideo.setMinimumWidth(newWidth);
objelementos.pgrprogreso.setVisibility(View.VISIBLE);
objelementos.btnComentarios.setEnabled(false);
}
objelementos.imgfotoVideo.setVisibility(View.VISIBLE);
objelementos.btnVerVideo.setVisibility(View.VISIBLE);
objelementos.txtFecha.setText(datossss.getFecha());
objelementos.btnVerfoto.setVisibility(View.INVISIBLE);
}else{ if (datossss.getTipo()==2){ //SI ES UN POST
objelementos.txtTitulo.setText(datossss.getTituloPost());
objelementos.txtAutor.setText(datossss.getAutor());
objelementos.txtPost.setText(datossss.getTexto());
objelementos.txtPost.setVisibility(View.VISIBLE);
objelementos.imgfotoVideo.setVisibility(View.INVISIBLE);
objelementos.imgfotoVideo.setImageBitmap(null);
objelementos.btnVerVideo.setVisibility(View.INVISIBLE);
objelementos.txtFecha.setText(datossss.getFecha());
objelementos.btnVerfoto.setVisibility(View.INVISIBLE);
objelementos.btnComentarios.setEnabled(true);
objelementos.imgfotoVideo.setMinimumHeight(0);
objelementos.imgfotoVideo.setMinimumWidth(0);
objelementos.pgrprogreso.setVisibility(View.INVISIBLE);
//rtlCuerpo.set
}else{//SI ES UNA FOTO
objelementos.txtTitulo.setText(datossss.getTituloPost());
objelementos.txtAutor.setText(datossss.getAutor());
objelementos.imgfotoVideo.setVisibility(View.VISIBLE);
objelementos.btnVerfoto.setVisibility(View.VISIBLE);
if (datossss.getImagen()!=null){
Bitmap imagen = datossss.getImagen();
objreCReferencias.RegristrarReferenciaDebilBitmap(imagen, objReferenciaDebilBitmaps);
int width = imagen.getWidth();
int height = imagen.getHeight();
int newWidth = activiadPricipal.getWindowManager().getDefaultDisplay().getWidth();
int newHeight = newWidth-80;
float scalarw=((float) newWidth) /width;
float scalarh=((float) newHeight) /height;
Matrix ma = new Matrix();
ma.postScale(scalarw, scalarh);
Bitmap res = Bitmap.createBitmap(imagen, 0, 0,
width, height, ma, true);
objreCReferencias.RegristrarReferenciaDebilBitmap(res, objReferenciaDebilBitmaps);
objelementos.imgfotoVideo.setImageBitmap(res);
//imagen.recycle();
//res.recycle();
objelementos.btnComentarios.setEnabled(true);
objelementos.pgrprogreso.setVisibility(View.INVISIBLE);
}else{
int newWidth = activiadPricipal.getWindowManager().getDefaultDisplay().getWidth();
int newHeight = newWidth-80;
objelementos.imgfotoVideo.setImageBitmap(null);
objelementos.imgfotoVideo.setMinimumHeight(newHeight);
objelementos.imgfotoVideo.setMinimumWidth(newWidth);
objelementos.btnComentarios.setEnabled(false);
objelementos.pgrprogreso.setVisibility(View.VISIBLE);
}
objelementos.txtPost.setVisibility(View.INVISIBLE);
objelementos.btnVerVideo.setVisibility(View.INVISIBLE);
objelementos.txtFecha.setText(datossss.getFecha());
}
}
if (datossss.getImagenAvatar()!=null){
objelementos.imgAvatar.setImageBitmap(datossss.getImagenAvatar());
}else{
objelementos.imgAvatar.setImageResource(R.drawable.avatarpredeterminado);
}
objelementos.txtTitulo.setText(datossss.getTituloPost());
return vistaFila;
}
objelementos等效视图
这就是我做错了什么？我可能会说，对所有图像使用弱引用的正确方法是什么，并在我不需要时被删除？
答案 0 :(得分：1)
如果您在应用中使用bitmaps，请不要忘记拨打bmp.recycle()，因为GC在android中无法回收位图（适用于＆lt; Android v4.0，来自4.0以后，位图是dvm的一部分。另请参阅我对同一问题的回答。我已经解决了很多答案，它肯定会解决你的问题。
bitmap size exceeds Vm budget error android
答案 1 :(得分：0)
似乎您的适配器效率不高。您是否在api演示中实现了ViewHolder？ 您可以编辑帖子并将适配器粘贴到那里，以便我们查看是否存在问题。
答案 2 :(得分：0)
我认为问题在于加载图像，如果您在没有回收的情况下加载图像，那么它将始终显示OutOfMemoryError。因此，在渲染图像之前，请尝试使用以下代码缩小图像：
/*
* Function used to reduce the size of the image to avoid memory out of
* bound exception.
*/
public static Bitmap decodeFile(String f) {
try {
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f), null, o);
// The new size we want to scale to
final int REQUIRED_SIZE = 150;
// Find the correct scale value. It should be the power of 2.
int scale = 1;
while (o.outWidth / scale / 2 >= REQUIRED_SIZE
&& o.outHeight / scale / 2 >= REQUIRED_SIZE)
scale *= 2;
// Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
} catch (FileNotFoundException e) {
}
return null;
}
请注意，通过缩小图像质量会略微降低。