Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
ImageView that will draw a selector on top of image, support normal drawable and the newest RippleDrawable.
import android.annotation.TargetApi;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.os.Build;
import android.support.annotation.NonNull;
import android.util.AttributeSet;
import android.widget.ImageView;
import me.yugy.app.timeline.R;
public class SelectorImageView extends ImageView {
private Drawable mSelectorDrawable;
public SelectorImageView(Context context) {
this(context, null);
}
public SelectorImageView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public SelectorImageView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mSelectorDrawable = context.getResources().getDrawable(R.drawable.item_selector, context.getTheme());
} else {
//noinspection deprecation
mSelectorDrawable = context.getResources().getDrawable(R.drawable.item_selector);
}
if (mSelectorDrawable != null) {
mSelectorDrawable.setCallback(this);
}
}
@Override
protected void drawableStateChanged() {
super.drawableStateChanged();
mSelectorDrawable.setState(getDrawableState());
invalidate();
}
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
public void jumpDrawablesToCurrentState() {
super.jumpDrawablesToCurrentState();
mSelectorDrawable.jumpToCurrentState();
}
@Override
protected boolean verifyDrawable(Drawable dr) {
return dr == mSelectorDrawable || super.verifyDrawable(dr);
}
@Override
public void invalidateDrawable(@NonNull Drawable dr) {
if (dr == mSelectorDrawable) {
invalidate();
} else {
super.invalidateDrawable(dr);
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void drawableHotspotChanged(float x, float y) {
super.drawableHotspotChanged(x, y);
if (mSelectorDrawable != null) {
mSelectorDrawable.setHotspot(x, y);
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
mSelectorDrawable.setBounds(0, 0, w, h);
}
@Override
protected void onDraw(@NonNull Canvas canvas) {
super.onDraw(canvas);
mSelectorDrawable.draw(canvas);
}
}
@kyze8439690

This comment has been minimized.

Copy link
Owner Author

@kyze8439690 kyze8439690 commented Apr 12, 2015

Usage: change the R.drawable.item_selector the your own selector.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment