Android的内存不足问题 [英] Android OutOfMemory Issue

问题描述

我在我的应用程序面对的内存不足问题 还有一些搜索后，我发现这个code

  //德$ C $连拍影像和扩展它来减少内存消耗
私人位图德codeFILE（文件f）{
    尝试 {
        //德code图像尺寸
        BitmapFactory.Options O =新BitmapFactory.Options（）;
        o.inJustDe codeBounds = TRUE;
        BitmapFactory.de codeStream（新的FileInputStream（f）项，空，O）;

        //我们希望新的大小扩展到
        最终诠释REQUIRED_SIZE = 70;

        //找到正确的比例值。它应该是2的幂。
        int标= 1;
        而（o.outWidth /规模/ 2＆GT; = REQUIRED_SIZE和放大器;＆安培; o.outHeight /规模/ 2＆GT; = REQUIRED_SIZE）
            规模* = 2;

        //德code与inSampleSize
        BitmapFactory.Options O2 =新BitmapFactory.Options（）;
        o2.inSampleSize =规模;
        返回BitmapFactory.de codeStream（新的FileInputStream（f）项，空，O2）;
    }赶上（FileNotFoundException异常E）{}
    返回null;
}
 

但IDK如何使用它，任何帮助吗？ 并且是code吧？

解决方案

  

但IDK如何使用它

那我猜你还没有实现它！ 嗯，这方法对你（保存在SD卡，比如）一个调整位图至极的文件转换成可以作为一个ImageView的背景。

现在，回答你的问题，你可以使用它，因为我告诉你如下：

 位图位=去codeFILE（新文件（your_string_file_path））;
myImageView.setImageBitmap（位）;
 

这就是你要知道，我猜。

i face outofmemory issue in my app and after some search, I found out this code

    //decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File 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=70;

        //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;
}

but IDK how to use it , any help please ? and is the code right ?

解决方案

but IDK how to use it

Then I guess you haven't implemented it! Well, that method will convert a file of yours (saved at SD card, eg) to a resized Bitmap wich can be used as background of an ImageView.

Now, answering to your question, you can use it as I show you below:

Bitmap bitmap = decodeFile(new File(your_string_file_path));
myImageView.setImageBitmap(bitmap);

That's all you have to know, I guess.

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