Android设置常见控件点击效果

一. Imageview的点击效果——图片稍微变暗突出点击效果

public class ClickImageView extends AppCompatImageView {
    public ClickImageView(Context context) {
        super(context);
    }
    public ClickImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }
    public ClickImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                this.setColorFilter(0x99000000);
                return true;
            case MotionEvent.ACTION_UP:
            case MotionEvent.ACTION_CANCEL:
                this.setColorFilter(null);
                break;
        }
        return super.onTouchEvent(event);
    }
}

二. Button、TextView的点击效果

1. 仅仅突出点击效果（点击之后不需要特定颜色）——用style(不用shape、selector)，当需要波纹效果可设置foreground

    <TextView
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:text="点击效果"
        android:textColor="#DDFFFFFF"
        android:foreground="?android:attr/selectableItemBackground"//波纹效果
        android:background="@drawable/shape_5dp_blue"
        style="@style/Widget.AppCompat.Button"/>

//设置弧度、颜色（shape_5dp_blue）

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<corners android:radius="5dp"/>
    <solid android:color="@android:color/holo_blue_dark"/>
</shape>

TextView的click.gif

2. 设置点击和非点击两种状态特定颜色——用shape、selector，当需要波纹效果可设置foreground,当也需要底部点击阴影效果可设置style

<TextView
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:text="点击效果"
        android:textColor="#DDFFFFFF"
        android:foreground="?android:attr/selectableItemBackground"//当需要波纹效果
        android:background="@drawable/selector_5dp_blue"
        
![点击效果.gif](https://img.haomeiwen.com/i3067748/e6e6601170e3b21a.gif?imageMogr2/auto-orient/strip)
style="@style/Widget.AppCompat.Button"
        />  

(selector_5dp_blue)
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape>
            <solid android:color="@android:color/holo_red_dark"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>
    <item android:state_pressed="false">
        <shape>
            <solid android:color="@android:color/holo_blue_dark"/>
            <corners android:radius="5dp"/>
        </shape>
    </item>
</selector>

点击效果.gif

3. 当有的要求更高，需要设置波纹效果的颜色——用ripple(只能在21或以上使用，所以新建drawable-v21,都是命名selector_5dp_blue)

(selector_5dp_blue)
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
        android:color="@android:color/holo_red_dark">
    <item>
        <selector>
            <item android:state_pressed="true">
                <shape>
                    <solid android:color="@android:color/holo_red_dark"/>
                    <corners android:radius="5dp"/>
                </shape>
            </item>
            <item android:state_pressed="false">
                <shape>
                    <solid android:color="@android:color/holo_blue_dark"/>
                    <corners android:radius="5dp"/>
                </shape>
            </item>
        </selector>
    </item>
</ripple>

点击效果.gif
ripple使用参考