安卓可绘制的语音气泡

2022-08-31 17:03:47

我已经找了好几天,找不到任何关于如何绘制气泡或绘制9个补丁图像用作背景的好线索。我是一个糟糕的艺术家。任何人都可以帮忙吗?

我找到的最好的示例是在Stack Overflow上,但它是用Objective C编写的。

如何在iPhone上绘制“语音气泡”?


答案 1

如果您正在创建聊天屏幕,则可能需要实现传入语音气泡和传出语音气泡。以下是我是如何做到的:

shape_bg_incoming_bubble.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <rotate
            android:fromDegrees="-45"
            android:pivotX="0%"
            android:pivotY="0%"
            android:toDegrees="0" >
            <shape android:shape="rectangle" >
                <solid android:color="@color/primary" />
            </shape>
        </rotate>
    </item>
    <item android:left="16dp">
        <shape android:shape="rectangle" >
            <solid android:color="@color/primary" />
            <corners android:radius="4dp" />
        </shape>
    </item>
</layer-list>

shape_bg_outgoing_bubble.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <rotate
            android:fromDegrees="45"
            android:pivotX="100%"
            android:pivotY="0%"
            android:toDegrees="0" >
            <shape android:shape="rectangle" >
                <solid android:color="@color/grey_500" />
            </shape>
        </rotate>
    </item>
    <item android:right="16dp">
        <shape android:shape="rectangle" >
            <solid android:color="@color/grey_500" />
            <corners android:radius="4dp" />
        </shape>
    </item>
</layer-list>

答案 2

我知道这有点太晚了。对于那些不想使用9补丁图像但又想从语音气泡中投射阴影的人来说。这是我能到达的最接近WhatsApp的语音气泡。感谢@toobsco42上面的答案。

给你。。

传入的语音气泡 :

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

<!--Shadow Layers-->

<item>
    <rotate
        android:fromDegrees="-35"
        android:pivotX="0%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp"/>
            <padding
                android:bottom="1px"
                android:left="1px"
                android:right="1px"/>
            <solid android:color="#01000000" />
        </shape>
    </rotate>
</item>
<item android:left="8dp">
    <shape android:shape="rectangle">
        <padding
            android:bottom="1px"
            android:left="1px"
            android:right="1px"/>
        <solid android:color="#01000000" />
        <corners android:radius="8dp" />
    </shape>
</item>

<!--===============-->
<item>
    <rotate
        android:fromDegrees="-35"
        android:pivotX="0%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp"/>
            <padding
                android:bottom="1px" />
            <solid android:color="#09000000" />
        </shape>
    </rotate>
</item>
<item android:left="8dp">
    <shape android:shape="rectangle">
        <padding
            android:bottom="1px" />
        <solid android:color="#09000000" />
        <corners android:radius="8dp" />
    </shape>
</item>

<!--===============-->

<item>
    <rotate
        android:fromDegrees="-35"
        android:pivotX="0%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp"/>
            <padding
                android:bottom="1px"
                android:left="1px"
                android:right="1px"/>
            <solid android:color="#10000000" />
        </shape>
    </rotate>
</item>
<item android:left="8dp">
    <shape android:shape="rectangle">
        <padding
            android:bottom="1px"
            android:left="1px"
            android:right="1px"/>
        <solid android:color="#10000000" />
        <corners android:radius="8dp" />
    </shape>
</item>

<!--ForeGround-->

<item>
    <rotate
        android:fromDegrees="-35"
        android:pivotX="0%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp"/>
            <solid android:color="@color/colorWhite" />
        </shape>
    </rotate>
</item>
<item android:left="8dp">
    <shape android:shape="rectangle">
        <solid android:color="@color/colorWhite" />
        <corners android:radius="8dp" />
    </shape>
</item>

</layer-list>

外向语音气泡 :

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

<!--Shadow Layer-->

<item>
    <rotate
        android:fromDegrees="40"
        android:pivotX="100%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp" />
            <padding
                android:bottom="1px"
                android:left="1px"
                android:right="1px" />
            <solid android:color="#01000000" />
        </shape>
    </rotate>
</item>
<item android:right="10dp">
    <shape android:shape="rectangle">
        <corners android:radius="4dp" />
        <padding
            android:bottom="1px"
            android:left="1px"
            android:right="1px" />
        <solid android:color="#01000000" />
    </shape>
</item>

<!--===============-->

<item>
    <rotate
        android:fromDegrees="40"
        android:pivotX="100%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp" />
            <padding android:bottom="1px" />
            <solid android:color="#09000000" />
        </shape>
    </rotate>
</item>
<item android:right="10dp">
    <shape android:shape="rectangle">
        <corners android:radius="4dp" />
        <padding android:bottom="1px" />
        <solid android:color="#09000000" />
    </shape>
</item>

<!--===============-->

<item>
    <rotate
        android:fromDegrees="40"
        android:pivotX="100%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <corners android:radius="4dp" />
            <padding
                android:bottom="1px"
                android:left="1px"
                android:right="1px" />
            <solid android:color="#10000000" />
        </shape>
    </rotate>
</item>
<item android:right="10dp">
    <shape android:shape="rectangle">
        <corners android:radius="4dp" />
        <padding
            android:bottom="1px"
            android:left="1px"
            android:right="1px" />
        <solid android:color="#10000000" />
    </shape>
</item>

<!--===============-->


<!--ForeGround-->

<item>
    <rotate
        android:fromDegrees="40"
        android:pivotX="100%"
        android:pivotY="0%"
        android:toDegrees="0">
        <shape android:shape="rectangle">
            <solid android:color="#CBEBFC" />
        </shape>
    </rotate>
</item>
<item android:right="10dp">
    <shape android:shape="rectangle">
        <solid android:color="#CBEBFC" />
        <corners android:radius="4dp" />
    </shape>
</item>

</layer-list>

在布局中正确使用填充。我用了这些值:

<TextView
    android:id="@+id/text_message_incoming"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:background="@drawable/bg_speech_bubble_incoming"
    android:lineSpacingExtra="2dp"
    android:paddingLeft="20dp"
    android:paddingTop="4dp"
    android:paddingRight="10dp"
    android:paddingBottom="10dp"
    android:text="Hi, How are you?"
    android:textColor="@color/colorBlack"
    android:textSize="13.5dp"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintWidth_max="wrap"
    app:layout_constraintWidth_percent="0.8" />

我的输出是这样的:

enter image description here


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