我使用位图。它显示了内存不足的错误。能不能避免热。我的code为以下。提前感谢。
位图MYBITMAP = Image.de codeSampledBitmapFromUri(路,250,500);
img_cook [指数] .setImageBitmap(MYBITMAP);
公共静态位图德codeSampledBitmapFromUr(字符串路径,诠释reqWidth,
INT reqHeight){
位图BM = NULL;
最后BitmapFactory.Options选项=新BitmapFactory.Options();
options.inJustDe codeBounds = TRUE;
BitmapFactory.de codeFILE(路径选择);
options.inSampleSize = calculateInSampleSize(选项,reqWidth,reqHeight);
options.inJustDe codeBounds = FALSE;
BM = BitmapFactory.de codeFILE(路径选择);
返回BM;
}
公共静态INT calculateInSampleSize(BitmapFactory.Options选项,
INT reqWidth,诠释reqHeight){
最终诠释身高= options.outHeight;
最终诠释宽度= options.outWidth;
INT inSampleSize = 1;
如果(高度> reqHeight ||宽度GT; reqWidth){
如果(宽>高度){
inSampleSize = Math.round((浮动)的高度/(浮点)reqHeight);
} 其他 {
inSampleSize = Math.round((浮点)宽/(浮点)reqWidth);
}
}
解决方案
当你做你的位图,是指当你的位图所做的工作,然后让它recyle和空象下面这样:
bitmap.recycle();
位= NULL;
或
我觉得你是从URL中下载图片,所以我建议你使用Android查询了这一点,你将永远不会得到这个错误,如果你使用它。
您可以从这里下载jar文件: HTTP://$c$c.google.com/p/android - 查询/下载/列表 下载jar文件,并设置罐子构建路径。
AQuery androidAQuery =新AQuery(本);
作为一个例子,从URL直接加载图像:
androidAQuery.id(您ImageView的),在图像配(图像加载,真正的,真实的,getDeviceWidth(),任何默认的图片你想显示);
作为一个例子,从URL得到位图:
androidAQuery.ajax(图像URL,Bitmap.class,0,新AjaxCallback<位图>(){
@覆盖
公共无效回调(字符串URL,位图对象,AjaxStatus状态){
super.callback(URL,对象,地位);
//你会得到目标位图。
}
});
这是非常快速和准确,并利用这一点,你可以装的时候找到更多的功能,如动画;得到一个位图,如果需要的话;等等。
i am using bitmap. it shows out of memory error. hot can it be avoided. my code is following. advance to thanks.
Bitmap myBitmap = Image.decodeSampledBitmapFromUri(path, 250, 500);
img_cook[index].setImageBitmap(myBitmap);
public static Bitmap decodeSampledBitmapFromUr(String path, int reqWidth,
int reqHeight) {
Bitmap bm = null;
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, options);
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
options.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(path, options);
return bm;
}
public static int calculateInSampleSize(BitmapFactory.Options options,
int reqWidth, int reqHeight) {
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float)height / (float)reqHeight);
} else {
inSampleSize = Math.round((float)width / (float)reqWidth);
}
}
解决方案
When you have done with your Bitmap, means when your Bitmap done its work then make it recyle and null like below:
bitmap.recycle();
bitmap=null;
OR
I think you are downloading Image from url, so I am suggesting you to use Android Query for this, you will never get this error if you used it.
You can download the jar file from here : http://code.google.com/p/android-query/downloads/list Download the jar file and set jar to your Build Path.
AQuery androidAQuery=new AQuery(this);
As an example to load image directly from url:
androidAQuery.id(YOUR IMAGEVIEW).image(YOUR IMAGE TO LOAD, true, true, getDeviceWidth(), ANY DEFAULT IMAGE YOU WANT TO SHOW);
As an example to get Bitmap from url:
androidAQuery.ajax(YOUR IMAGE URL,Bitmap.class,0,new AjaxCallback<Bitmap>(){
@Override
public void callback(String url, Bitmap object, AjaxStatus status) {
super.callback(url, object, status);
//You will get Bitmap from object.
}
});
It's very fast and accurate, and using this you can find many more features like Animation when loading; getting a bitmap, if needed; etc.
上一篇:抓住关键preSS采用Android关键、preSS、Android
下一篇:Android的ListView的子View的setEnabled()和setClickable()什么都不做什么都不、ListView、Android、View