ImageView的OutOfMemoryException异常 [英] ImageView OutofMemoryException
本文介绍了ImageView的OutOfMemoryException异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个问题在ImageView的插入图像时。我曾尝试多种方法来解决它,但它仍然失败,最新的版本如下。影像尺寸为3000x3000。
code:
ImageView的IV =(ImageView的)findViewById(R.id.imageView);
位图originalBitmap = BitmapFactory.de codeResource(getResources(),R.drawable.prueba_plano_2).copy(Bitmap.Config.ARGB_8888,真正的);
iv.setImageBitmap(originalBitmap);
XML:
<的FrameLayout
机器人:ID =@ + ID /根
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:layout_alignParentBottom =真
机器人:layout_alignParentLeft =真
机器人:layout_below =@ + ID / buttonlayer>
< ImageView的
机器人:ID =@ + ID / ImageView的
机器人:layout_width =match_parent
机器人:layout_height =match_parent
机器人:layout_gravity =中心
机器人:adjustViewBounds =真
机器人:contentDescription =@字符串/递减
机器人:scaleType =矩阵/>
< /的FrameLayout>
logcat的:
九月六日至21日:32:06.721:E / AndroidRuntime(25709):致命异常:主要
九月六号至21日:32:06.721:E / AndroidRuntime(25709):java.lang.OutOfMemoryError
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.Bitmap.nativeCreate(本机方法)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.Bitmap.createBitmap(Bitmap.java:605)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.Bitmap.createBitmap(Bitmap.java:551)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.BitmapFactory.finishDe code(BitmapFactory.java:524)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.BitmapFactory.de codeStream(BitmapFactory.java:499)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.BitmapFactory.de codeResourceStream(BitmapFactory.java:351)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.BitmapFactory.de codeResource(BitmapFactory.java:374)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在android.graphics.BitmapFactory.de codeResource(BitmapFactory.java:404)
九月六号至21日:32:06.721:E / AndroidRuntime(25709):在
.............
解决方案
位图的最大尺寸为2048×2048,如果你的位图大于这个你应该扩大它..
我用这个方法来扩展位图:
公共静态位图scaleBitmap(位图bitmapToScale,浮newWidth,浮newHeight){
如果(bitmapToScale == NULL)
返回null;
//获取原始宽度和高度
INT宽度= bitmapToScale.getWidth();
INT高= bitmapToScale.getHeight();
//创建矩阵用于操作
字模=新的Matrix();
//调整位图
matrix.postScale(newWidth /宽,newHeight /高);
//重新创建新的位图,并将其回
返回Bitmap.createBitmap(bitmapToScale,0,0,bitmapToScale.getWidth(),bitmapToScale.getHeight(),矩阵,真);
}
您也可以使用此检查内存状态:
ActivityManager actMgr =(ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
ActivityManager.MemoryInfo明复=新ActivityManager.MemoryInfo();
actMgr.getMemoryInfo(明复);
如果(minfo.lowMemory){//做一些事情}
I have a problem when inserting an image in an ImageView. I have tried several ways to solve it but it still fails, the latest version follows. The image size is 3000x3000.
Code:
ImageView iv = (ImageView) findViewById(R.id.imageView);
Bitmap originalBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.prueba_plano_2).copy(Bitmap.Config.ARGB_8888, true);
iv.setImageBitmap(originalBitmap);
XML:
<FrameLayout
android:id="@+id/root"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_below="@+id/buttonlayer" >
<ImageView
android:id="@+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:contentDescription="@string/desc"
android:scaleType="matrix" />
</FrameLayout>
Logcat:
06-21 09:32:06.721: E/AndroidRuntime(25709): FATAL EXCEPTION: main
06-21 09:32:06.721: E/AndroidRuntime(25709): java.lang.OutOfMemoryError
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.Bitmap.nativeCreate(Native Method)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.Bitmap.createBitmap(Bitmap.java:605)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.Bitmap.createBitmap(Bitmap.java:551)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.Bitmap.createScaledBitmap(Bitmap.java:437)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.BitmapFactory.finishDecode(BitmapFactory.java:524)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:499)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:351)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:374)
06-21 09:32:06.721: E/AndroidRuntime(25709): at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:404)
06-21 09:32:06.721: E/AndroidRuntime(25709): at
.............
解决方案
The max size of a bitmap is 2048x2048, if your bitmap is bigger than this you should scale it..
I'm using this method to scale a bitmap:
public static Bitmap scaleBitmap(Bitmap bitmapToScale, float newWidth, float newHeight) {
if(bitmapToScale == null)
return null;
//get the original width and height
int width = bitmapToScale.getWidth();
int height = bitmapToScale.getHeight();
// create a matrix for the manipulation
Matrix matrix = new Matrix();
// resize the bit map
matrix.postScale(newWidth / width, newHeight / height);
// recreate the new Bitmap and set it back
return Bitmap.createBitmap(bitmapToScale, 0, 0, bitmapToScale.getWidth(), bitmapToScale.getHeight(), matrix, true);
}
You can also check the memory state using this:
ActivityManager actMgr = (ActivityManager)getSystemService(Context.ACTIVITY_SERVICE);
ActivityManager.MemoryInfo minfo = new ActivityManager.MemoryInfo();
actMgr.getMemoryInfo(minfo);
if(minfo.lowMemory) { //do something}
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