which is the suitable method to recyle bitmap?
friends,
i have a page on which i am displaying image from gallery then i have next page button to move to next activity on that button i am using clearBitmap(); to free memory used by it.
private Bitmap bitmap;
oncreate()
{
_image = (ImageView)findViewById(R.id.MyImage);
_path = getRealPathFromURI(_data.getData());
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 2;
bitmap = BitmapFactory.decodeFile( _path, options );
_image.setImageBitmap(bitmap);
next.setOnClickListener(new OnClickListener() {
@Override
public void开发者_Python百科 onClick(View view) {
Intent myIntent = new Intent(UploadImageOnly.this, ImageGallery.class);
startActivity(myIntent);
clearBitmap();
}
which gives me error logcat
08-13 12:07:07.649: ERROR/AndroidRuntime(753): Uncaught handler: thread main exiting due to uncaught exception
08-13 12:07:07.869: ERROR/AndroidRuntime(753): java.lang.RuntimeException: Canvas: trying to use a recycled bitmap android.graphics.Bitmap@43c13dd0
08-13 12:07:07.869: ERROR/AndroidRuntime(753): at android.graphics.Canvas.throwIfRecycled(Canvas.java:955)
08-13 12:07:07.869: ERROR/AndroidRuntime(753): at android.graphics.Canvas.drawBitmap(Canvas.java:1044)
08-13 12:07:07.869: ERROR/AndroidRuntime(753): at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:323)
08-13 12:07:07.869: ERROR/AndroidRuntime(753): at android.widget.ImageView.onDraw(ImageView.java:845)
08-13 12:07:07.869: ERROR/AndroidRuntime(753): at android.view.View.draw(View.java:6535)
code
public void clearBitmap() {
try{
if(bitmap!=null && !bitmap.isRecycled()){
bitmap.recycle();
bitmap = null;
}
}catch(Throwable e){
System.out.println(e.getMessage());
e.printStackTrace();
}
System.gc();
}
Just let the garbage collector handle it. You do not need to use Bitmap#recycle()
in your case or in any normal case really.
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