Android and android Official Website

Android and android Official Website
Bitmap to Drawable

Bitmap bm=xxx; BitmapDrawable bd=new BitmapDrawable(bm);

Because BtimapDrawable is a subclass of Drawable, you can directly use the bd object.

Drawable to Bitmap

Drawable d=xxx; BitmapDrawable bd = (BitmapDrawable) d;Bitmap bm = bd.getBitmap();

Finally, bm is the Bitmap object we need.

Obtain Bitmap from resources

public static Bitmap getBitmapFromResources(Activity act, int resId) {    Resources res = act.getResources();    return BitmapFactory.decodeResource(res, resId);}

Byte [] → Bitmap

public static Bitmap convertBytes2Bimap(byte[] b) {    if (b.length == 0) {        return null;    }    return BitmapFactory.decodeByteArray(b, 0, b.length);}

Bitmap → byte []

public static byte[] convertBitmap2Bytes(Bitmap bm) {    ByteArrayOutputStream baos = new ByteArrayOutputStream();    bm.compress(Bitmap.CompressFormat.PNG, 100, baos);    return baos.toByteArray();}

Drawable → Bitmap

public static Bitmap convertDrawable2BitmapByCanvas(Drawable drawable) {    Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),drawable.getIntrinsicHeight(),drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888: Bitmap.Config.RGB_565);    Canvas canvas = new Canvas(bitmap);    // canvas.setBitmap(bitmap);    drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),    drawable.getIntrinsicHeight());    drawable.draw(canvas);    return bitmap;}

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What language is used for Android software development?

What else does Javascript proficient android ahan.

What language is used for Android software development?

What else does Javascript proficient android ahan.