在onRetainNonConfigurationInstance（）的帮助下将位图保留在内存中

Question

I have a large bitmap that i would like to keep in memory when the qwerty keyboard is visible. My app is always in landscape, so this is the only configuration change that will cause a reDraw. I heard this is what onRetainNonConfigurationinstance() is for...but cant figure it out. Can someone point me in the right direction? Thanks.

Answer 1

try

    @Override
public Object onRetainNonConfigurationInstance() {
    return bitMap;
}

in onCreate call getLastNonConfigurationInstance(); to recive the bitmap

I hade a smilare read about it Save cache when rotate device