GridLayout 使用

上次做了一个小键盘,请见:PopupWindow 使用

效果是这样的:

11_thumb1

可以看到,上面的按键是不一样大小的。因为是用LinearLayout布局,用的Button样式也是默认的。数字键和文字键的大小不一致。

为了使按键大小一致,并且定制Button样式,决定改用GridLayout实现。过程如下:

1.GridLayout

布局文件如下:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/pinpad_dialog"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:columnCount="3"
    app:orientation="horizontal"
    app:rowCount="6">

    <Button
        android:id="@+id/btnUp"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_func_style"
        android:gravity="center"
        android:soundEffectsEnabled="true"
        android:text="@string/up_arrow"
        android:textSize="26sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnDown"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_func_style"
        android:soundEffectsEnabled="true"
        android:text="@string/down_arrow"
        android:textSize="26sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnMenu"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_func_style"
        android:soundEffectsEnabled="true"
        android:text="Menu"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn1"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="1"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn2"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="2"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn3"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="3"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn4"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="4"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn5"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="5"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn6"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="6"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn7"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="7"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn8"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="8"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn9"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="9"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnFunc"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_func_style"
        android:soundEffectsEnabled="true"
        android:text="Func"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btn0"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_button_style"
        android:soundEffectsEnabled="true"
        android:text="0"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnAlpha"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_clear_style"
        android:soundEffectsEnabled="true"
        android:text="Alpha"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnCancel"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_cancel_style"
        android:soundEffectsEnabled="true"
        android:text="Cancel"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnClear"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_clear_style"
        android:soundEffectsEnabled="true"
        android:text="Clear"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

    <Button
        android:id="@+id/btnEnter"
        android:layout_height="30dp"
        android:layout_margin="3dp"
        android:background="@drawable/key_btn_enter_style"
        android:soundEffectsEnabled="true"
        android:text="Enter"
        android:textSize="20sp"
        app:layout_columnWeight="1"
        app:layout_rowWeight="1" />

</android.support.v7.widget.GridLayout>
View Code

这里说明几点:

(1)android.support.v7.widget.GridLayout

这里用的是V7包中的GridLayout,因为在当前开发的应用中,设置minSdkVersion是19。
而下面要用到的两个属性,在一般的GridLayout中需要API21才能使用。
在AndroidStudio中,默认是还没有下载兼容包的控件的,在design模式下,点击相应的AppCompat控件,下载即可。
image

(2)使GridLayout的子元素平分屏幕

需要用下面的这两个属性。

app:layout_columnWeight="1" 

app:layout_rowWeight="1" 

具体参考:Android的GridLayout的子元素如何平分屏幕

2.自定义button样式

(1)自定义的drawable

key_button_pressed.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#656462" />
            <corners
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp" />
        </shape>
    </item>
    <item
        android:bottom="1px"
        android:left="1px"
        android:right="1px"
        android:top="1px">
        <shape>
            <gradient
                android:angle="90"
                android:centerX="0.5"
                android:centerY="0.5"
                android:endColor="#fbf8f4"
                android:startColor="#7b7b79"
                android:type="linear" />
            <corners
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp" />
        </shape>
    </item>
</layer-list>
View Code

key_button_default.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#656462" />
            <corners
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp" />
        </shape>
    </item>
    <item
        android:bottom="1px"
        android:left="1px"
        android:right="1px"
        android:top="1px">
        <shape>
            <gradient
                android:angle="90"
                android:centerX="0.5"
                android:centerY="0.5"
                android:endColor="#fbf8f4"
                android:startColor="#656462"
                android:type="linear" />
            <corners
                android:bottomLeftRadius="5dp"
                android:bottomRightRadius="5dp"
                android:topLeftRadius="5dp"
                android:topRightRadius="5dp" />
        </shape>
    </item>
</layer-list>
View Code

(2)自定义的selector

key_button_style.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/key_button_pressed" android:state_pressed="true" />
    <item android:drawable="@drawable/key_button_default" />
</selector>
View Code

在上面这个selector中,就用到上面的两个drawable文件。

key_btn_cancel_style.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#e7352c" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#da2219" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
</selector>
View Code

key_btn_func_style.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#2a7afb" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#126af9" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
</selector>
View Code

key_btn_enter_style.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#4de947" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#2ac824" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
</selector>
View Code

key_btn_clear_style.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="true">
        <shape android:shape="rectangle">
            <solid android:color="#f2992d" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
    <item>
        <shape android:shape="rectangle">
            <solid android:color="#f78a04" />
            <corners android:bottomLeftRadius="5dp" android:bottomRightRadius="5dp" android:topLeftRadius="5dp" android:topRightRadius="5dp" />
        </shape>
    </item>
</selector>
View Code

(3)将selector应用到button中

android:background="@drawable/key_btn_enter_style"
将Button的background属性,设置为相应的selector即可。

3.其他

在设置颜色的时候,一度找不到取色器。
原来只要点击xml文件左侧的颜色即可,参考下图:
image

4.效果

下面是以上GridLayout和自定义Button的效果图:

image

posted @ 2016-12-20 18:51  庭庭小妖  阅读(2820)  评论(0编辑  收藏  举报