Android OutOfMemory Issue [closed]

问题

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Closed 7 years ago.

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 ?

回答1:

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.

来源：https://stackoverflow.com/questions/11785179/android-outofmemory-issue