WPS Office.apk(点击下载) / AlphaImageView.java

package cn.wps.note.edit.ui.common;

import android.content.Context;
import android.graphics.Canvas;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.ImageView;

public class AlphaImageView extends ImageView {
    private int mAlpha = 255;

    public AlphaImageView(Context context) {
        super(context);
    }

    public AlphaImageView(Context context, AttributeSet attributeSet) {
        super(context, attributeSet);
        c(attributeSet);
    }

    public AlphaImageView(Context context, AttributeSet attributeSet, int i) {
        super(context, attributeSet, i);
        c(attributeSet);
    }

    private void c(AttributeSet attributeSet) {
        if (attributeSet != null) {
            setEnabled(attributeSet.getAttributeBooleanValue("http://schemas.android.com/apk/res/android", "enabled", true));
        }
    }

    public void draw(Canvas canvas) {
        if (255 != this.mAlpha) {
            canvas.saveLayerAlpha(0.0f, 0.0f, (float) getWidth(), (float) getHeight(), this.mAlpha, 20);
        }
        super.draw(canvas);
        if (255 != this.mAlpha) {
            canvas.restore();
        }
    }

    public void refreshDrawableState() {
        int i = 255;
        if (!isEnabled()) {
            this.mAlpha = 71;
        } else if (Build.VERSION.SDK_INT >= 21) {
            this.mAlpha = 255;
        } else {
            if (isPressed()) {
                i = 76;
            }
            this.mAlpha = i;
        }
        super.refreshDrawableState();
        invalidate();
    }
}