At the beginning of Android, I recorded a new image scaling program.

At the beginning of Android, I wrote a simple image scaling program. After a little time, it seems necessary to record it.

Layout code:

<FrameLayout xmlns: android = "http://schemas.android.com/apk/res/android" android: layout_width = "fill_parent" android: layout_height = "fill_parent" android: layout_gravity = "clip_vertical"> <LinearLayout android: layout_width = "fill_parent" android: layout_height = "fill_parent" android: gravity = "bottom | center_horizontal" android: orientation = "horizontal"> <Button android: id = "@ + id/bsx" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: text = ""/> <Button android: id = "@ + id/bfd" android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: text = "zoom in"/> </LinearLayout> <LinearLayout android: layout_width = "wrap_content" android: layout_height = "wrap_content" android: orientation = "vertical"> <ImageView android: id = "@ + id/img" android: layout_width = "wrap_content" android: layout_height = "wrap_content"> </ImageView> </LinearLayout> </FrameLayout>

Java code:

  MainActivity  Activity  screenWidth;      screenHeight;     scaleWidth = 1f;      scaleHeight =    @Override     == == dm.heightPixels - 80= (ImageView) = (Button) = (Button)     @Override        (v.getId() == R.id.bfd) {            scaleWidth *= 1.2*= 1.2 {             scaleWidth *= 0.8*= 0.8          width = height ==  (width * scaleWidth > screenWidth|| height * scaleHeight >==            tewmpmap = Bitmap.createBitmap(bmp, 0, 0, width, height, ma,