android how apply shape and selector simultaneousl

2019-01-16 07:08发布

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问题:

I have applied a shape for a button like:

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"
       android:shape="rectangle" >
    <gradient android:startColor="#DD000000" android:endColor="#DD2d2d2d"  android:angle="90"></gradient>
    <corners android:radius="15dip"></corners>

</shape>

Now I want to use a selector like:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/active"
      android:state_pressed="true" />
<item android:drawable="@drawable/passive"/>

for this Button as well. Is it possible ...???

回答1:

use this way:

<?xml version="1.0" encoding="utf-8"?>
<selector
xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_pressed="true" >
    <shape>.......</shape>
</item>

. . . .

回答2:

Detailed to the point answer

Create a color resource in

res/values/colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>


    <item name="yellow" type="color">#F7B500</item>
    <item name="yellow_dark" type="color">#AC7E00</item>

    <integer-array name="androidcolors">
        <item>@color/yellow</item>
        <item>@color/yellow_dark</item>
    </integer-array>

</resources>

Create a drawable at

res/drawable/bg_yellow_round.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <solid android:color="@color/yellow" />

    <stroke
        android:width="2dp"
        android:color="@color/yellow" />

    <corners
        android:bottomLeftRadius="20dp"
        android:bottomRightRadius="20dp"
        android:topLeftRadius="20dp"
        android:topRightRadius="20dp" />

</shape>

Create another drawable, you want for transition at same place and name it

res/drawable/bg_yellow_dark_round.xml

<solid android:color="@color/yellow_dark" />

<stroke
    android:width="2dp"
    android:color="@color/yellow_dark" />

<corners
    android:bottomLeftRadius="20dp"
    android:bottomRightRadius="20dp"
    android:topLeftRadius="20dp"
    android:topRightRadius="20dp" />

Now create a color state list at

res/color/btn_selector_yellow.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitFadeDuration="@android:integer/config_shortAnimTime">

    <item android:drawable="@color/yellow" android:state_focused="true" android:state_pressed="false"/>
    <item android:drawable="@drawable/bg_yellow_dark_round" android:state_pressed="true"/>
    <item android:drawable="@drawable/bg_yellow_round"/>

</selector>

Now set it to your button as following

<Button
                android:id="@+id/button1"
                android:layout_width="248dp"
                android:layout_height="44dp"
                android:layout_gravity="center_horizontal"
                android:layout_marginBottom="10dp"
                android:layout_marginTop="20dp"
                android:background="@color/btn_selector_yellow"
                android:text="AZ_ is so cool" />

Now this will do transition from

回答3:

shape.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/star_off"/>
    <corners android:radius="5dp"/>
    <padding android:left="0dp" android:top="0dp" android:right="0dp" android:bottom="0dp" />
</shape>

selector.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android" android:exitFadeDuration="@android:integer/config_mediumAnimTime">

    <item android:drawable="@color/tab_focused" android:state_focused="true" android:state_pressed="false"/>
    <item android:drawable="@color/tab_pressed" android:state_pressed="true"/>
    <item android:drawable="@drawable/shape"/>

</selector>

回答4:

You can also create a shape that is using a selector inside. If your shape is just changing its color in different states, this is a lot cleaner.

color/color_selector.xml

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="@color/blue_dark" android:state_pressed="true" />
    <item android:color="@color/blue_light" />
</selector>

drawable/shape.xml

<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <solid android:color="@color/color_selector" />
    <corners android:bottomLeftRadius="6dip" android:bottomRightRadius="6dp" />
    <padding android:bottom="0dip" android:left="0dip" android:right="0dip" android:top="0dip" />
</shape>

回答5:

This is my way, and it works!

<item android:state_pressed="true">

    <shape android:shape="oval">


        <gradient android:centerX=".6"
            android:centerY=".40"
            android:endColor="@color/colorPrimary"
            android:gradientRadius="20"
            android:startColor="@color/colorPrimary"
            android:type="radial" />

        <stroke android:width="1dp"
            android:color="#FFFFFF" />

        <size android:width="55dp"
            android:height="55dp" />

    </shape>
</item>

<item android:state_focused="false">
    <shape android:shape="oval">


        <gradient android:centerX=".6"
            android:centerY=".40"
            android:endColor="@android:color/transparent"
            android:gradientRadius="20"
            android:startColor="@android:color/transparent"
            android:type="radial" />

        <stroke android:width="1dp"
            android:color="#FFFFFF" />

        <size android:width="55dp"
            android:height="55dp" />

    </shape>
</item>

回答6:

My example is a circle button with state_pressed. code bellow:

<?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="oval">
            <solid android:color="@color/light_primary_color" />
        </shape>

    </item>
    <item>
        <shape android:shape="oval">
            <solid android:color="@color/accent_color" />
        </shape>
    </item>

</selector>

回答7:

Well I know it's way too late But here is a solved example

 <TextView
            android:id="@+id/txt_out_going_calls"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="04dp"
            android:layout_weight="1"
            android:background="@drawable/header_text_view_selector"
            android:gravity="center"
            android:text="@string/outgoing_calls_tab_button_text"
            android:textColor="@color/home_text_color" />

and my header_text_view_selector

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true">

        <shape xmlns:android="http://schemas.android.com/apk/res/android">
            <solid android:color="@color/home_fragment_tab_color_selected"/>
            <corners android:radius="25dip" />
            <padding android:bottom="08dip" android:left="9dip" android:right="9dip" android:top="08dip" />
        </shape>
    </item>
    <item android:state_selected="false">

        <shape>
            <solid android:color="@color/home_fragment_tab_color_simple"/>
            <corners android:radius="25dip" />
            <padding android:bottom="08dip" android:left="9dip" android:right="9dip" android:top="08dip" />
        </shape>
    </item>
</selector>

So basically i m creating a rounded textview with selector. Here i m handling only state_selected and not_selected. Hope it helps

回答8:

To be more reusable, you can set states on single properties. Avoid duplicating your shapes

<selector
    xmlns:android="http://schemas.android.com/apk/res/android"
>
    <item>
        <shape android:shape="rectangle" >
            <corners android:radius="5dp"/>
            <solid
                android:state_enabled="false"
                android:color="@color/transparent"
            />
            <solid
                android:state_enabled="true"
                android:color="@color/background"
            />
            <stroke
                android:width="@dimen/dividerHeight"
                android:color="@color/dividerLight"
            />
        </shape>
    </item>
</selector>

I was able to set background programmatically once disabled using this method.