位图运行时异常OutOfMemory错误 [英] Outofmemory error in bitmap runtime exception
本文介绍了位图运行时异常OutOfMemory错误的处理方法，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
我从入资产价值/图像文件夹显示我的图片，
但这code不工作。从这个资产code显示图像库文件夹。我使用库prefine库或jar文件。
请专家检查。感谢ü
AssetManager assetManager = getAssets（）;
的String []文件= NULL;
尝试{
文件= assetManager.list（图像）;
}赶上（IOException异常五）{
Log.e（标签，e.getMessage（））;
} 对于（字符串文件名：文件）{
的System.out.println（文件名=＆gt;中+文件名）;
在的InputStream = NULL;
尝试{
ImageViewTouch的ImageView =新ImageViewTouch（Rahul.this）;
imageView.setLayoutParams（新Gallery.LayoutParams（LayoutParams.FILL_PARENT，LayoutParams.FILL_PARENT））;
最后的选项选项=新的选项（）;
options.outHeight =（INT）scaleHeight;
options.outWidth =（INT）scaleWidth;
options.inScaled = TRUE;
options.inPurgeable = TRUE;
options.inSampleSize = 2;
在= assetManager.open（图像/+文件名）;
位图位= BitmapFactory.de codeStream（中）; imageView.setImageBitmap（位）; }赶上（例外五）{
Log.e（标签，e.getMessage（））;
}
}
gallery.setAdapter（arrayAdapter）;
解决方案
1）尽量使用 bitmap.recycle（）; 新位图设置之前释放内存你的图片
BitmapDrawable绘制=（BitmapDrawable）myImage.getDrawable（）;
位图的位图= drawable.getBitmap（）;
如果（位图！= NULL）
{
bitmap.recycle（）;
}
2）如果你的图片过大比例放倒他们：
公共静态位图德codeFILE（档案文件，诠释requiredSize）{
尝试{ //德code图像尺寸
BitmapFactory.Options O =新BitmapFactory.Options（）;
o.inJustDe codeBounds = TRUE;
BitmapFactory.de codeStream（新的FileInputStream（文件），空，O）; //我们希望新的大小缩放到 //找到正确的比例值。它应该是2的幂。
INT width_tmp = o.outWidth，height_tmp = o.outHeight;
int标= 1;
而（真）{
如果（width_tmp / 2'; requiredSize
|| height_tmp / 2'; requiredSize）
打破;
width_tmp / = 2;
height_tmp / = 2;
规模* = 2;
} //德code。与inSampleSize
BitmapFactory.Options O2 =新BitmapFactory.Options（）;
o2.inSampleSize =规模; BMP位图= BitmapFactory.de codeStream（新的FileInputStream（文件），
空，O2）; 返回BMP; }赶上（FileNotFoundException异常五）{
} {最后
}
返回null;
}
更新
是这样的：
的for（int i = 0; I＆LT; it.size（）;我++）{
ImageViewTouch的ImageView =新ImageViewTouch（GalleryTouchTestActivity.this）;
imageView.setLayoutParams（新Gallery.LayoutParams（LayoutParams.FILL_PARENT，LayoutParams.FILL_PARENT））;
选项选项=新的选项（）;
options.inSampleSize = 2;
串photoURL = it.get（ⅰ）; BitmapDrawable绘制=（BitmapDrawable）imageView.getDrawable（）;
位图的位图= drawable.getBitmap（）;
如果（位图！= NULL）
{
bitmap.recycle（）;
} 位= BitmapFactory.de codeFILE（photoURL）; imageView.setImageBitmap（位图）;
arrayAdapter.add（ImageView的）;
}
i am displaying my images from assests/image folder , but this code is not working . this code display images from assets folder in gallery . i am using gallery prefine library or jar file.
please expert check it . thank u
AssetManager assetManager = getAssets();
String[] files = null;
try {
files = assetManager.list("image");
} catch (IOException e) {
Log.e("tag", e.getMessage());
}
for(String filename : files) {
System.out.println("File name => "+filename);
InputStream in = null;
try {
ImageViewTouch imageView = new ImageViewTouch(Rahul.this);
imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
final Options options = new Options();
options.outHeight = (int) scaleHeight;
options.outWidth = (int) scaleWidth;
options.inScaled = true;
options.inPurgeable = true;
options.inSampleSize = 2;
in = assetManager.open("image/"+filename);
Bitmap bit=BitmapFactory.decodeStream(in);
imageView.setImageBitmap(bit);
} catch(Exception e) {
Log.e("tag", e.getMessage());
}
}
gallery.setAdapter(arrayAdapter);
解决方案
1) try to use bitmap.recycle(); to release memory before setting a new bitmap to your images
BitmapDrawable drawable = (BitmapDrawable) myImage.getDrawable();
Bitmap bitmap = drawable.getBitmap();
if (bitmap != null)
{
bitmap.recycle();
}
2) if your images are too large scale down them:
public static Bitmap decodeFile(File file, int requiredSize) {
try {
// Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(file), null, o);
// The new size we want to scale to
// Find the correct scale value. It should be the power of 2.
int width_tmp = o.outWidth, height_tmp = o.outHeight;
int scale = 1;
while (true) {
if (width_tmp / 2 < requiredSize
|| height_tmp / 2 < requiredSize)
break;
width_tmp /= 2;
height_tmp /= 2;
scale *= 2;
}
// Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
Bitmap bmp = BitmapFactory.decodeStream(new FileInputStream(file),
null, o2);
return bmp;
} catch (FileNotFoundException e) {
} finally {
}
return null;
}
Update
something like this:
for(int i=0; i<it.size();i++) {
ImageViewTouch imageView = new ImageViewTouch(GalleryTouchTestActivity.this);
imageView.setLayoutParams(new Gallery.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
Options options = new Options();
options.inSampleSize = 2;
String photoURL = it.get(i);
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bitmap = drawable.getBitmap();
if (bitmap != null)
{
bitmap.recycle();
}
bitmap = BitmapFactory.decodeFile(photoURL);
imageView.setImageBitmap(bitmap);
arrayAdapter.add(imageView);
}
这篇关于位图运行时异常OutOfMemory错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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