在Android上重用drawable的部件

我正在为我的申请准备抽签。我有很多单选按钮，它们显示为带有可选帧的图像（选中时）。一个可绘制的视图如下所示：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true">
        <layer-list>
            <item>
                <shape android:shape="rectangle">
                    <solid android:color="@color/colorPrimary" />
                </shape>
            </item>

            <item>
                <inset android:insetTop="@dimen/selectionBorderSize"
                    android:insetLeft="@dimen/selectionBorderSize"
                    android:insetRight="@dimen/selectionBorderSize"
                    android:insetBottom="@dimen/selectionBorderSize">
                    <layer-list>
                        <item>
                            <shape android:shape="rectangle">
                                <solid android:color="#ffffff"></solid>
                            </shape>
                        </item>
                        <item>
                            <bitmap android:src="@drawable/sharp7" >
                                <padding android:bottom="@dimen/selectionBorderSize"
                                    android:top="@dimen/selectionBorderSize"
                                    android:left="@dimen/selectionBorderSize"
                                    android:right="@dimen/selectionBorderSize" />
                            </bitmap>
                        </item>
                    </layer-list>
                </inset>
            </item>
        </layer-list>
    </item>

    <item android:state_checked="false">
        <layer-list>
            <item>
                <shape android:shape="rectangle">
                    <solid android:color="#ffffff" />
                </shape>
            </item>

            <item>
                <inset android:insetTop="@dimen/selectionBorderSize"
                    android:insetLeft="@dimen/selectionBorderSize"
                    android:insetRight="@dimen/selectionBorderSize"
                    android:insetBottom="@dimen/selectionBorderSize">
                    <layer-list>
                        <item>
                            <shape android:shape="rectangle">
                                <solid android:color="#ffffff"></solid>
                            </shape>
                        </item>
                        <item>
                            <bitmap android:src="@drawable/sharp7" >
                                <padding android:bottom="@dimen/selectionBorderSize"
                                    android:top="@dimen/selectionBorderSize"
                                    android:left="@dimen/selectionBorderSize"
                                    android:right="@dimen/selectionBorderSize" />
                            </bitmap>
                        </item>
                    </layer-list>
                </inset>
            </item>
        </layer-list>
    </item>

    <item>
        <shape android:shape="rectangle">
            <solid android:color="#ffffff" />
        </shape>
    </item>
</selector>

另一个：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true">
        <layer-list>
            <item>
                <shape android:shape="rectangle">
                    <solid android:color="@color/colorPrimary" />
                </shape>
            </item>

            <item>
                <inset android:insetTop="@dimen/selectionBorderSize"
                    android:insetLeft="@dimen/selectionBorderSize"
                    android:insetRight="@dimen/selectionBorderSize"
                    android:insetBottom="@dimen/selectionBorderSize">
                    <layer-list>
                        <item>
                            <shape android:shape="rectangle">
                                <solid android:color="#ffffff"></solid>
                            </shape>
                        </item>
                        <item>
                            <bitmap android:src="@drawable/sharp6" >
                                <padding android:bottom="@dimen/selectionBorderSize"
                                    android:top="@dimen/selectionBorderSize"
                                    android:left="@dimen/selectionBorderSize"
                                    android:right="@dimen/selectionBorderSize" />
                            </bitmap>
                        </item>
                    </layer-list>
                </inset>
            </item>
        </layer-list>
    </item>

    <item android:state_checked="false">
        <layer-list>
            <item>
                <shape android:shape="rectangle">
                    <solid android:color="#ffffff" />
                </shape>
            </item>

            <item>
                <inset android:insetTop="@dimen/selectionBorderSize"
                    android:insetLeft="@dimen/selectionBorderSize"
                    android:insetRight="@dimen/selectionBorderSize"
                    android:insetBottom="@dimen/selectionBorderSize">
                    <layer-list>
                        <item>
                            <shape android:shape="rectangle">
                                <solid android:color="#ffffff"></solid>
                            </shape>
                        </item>
                        <item>
                            <bitmap android:src="@drawable/sharp6" >
                                <padding android:bottom="@dimen/selectionBorderSize"
                                    android:top="@dimen/selectionBorderSize"
                                    android:left="@dimen/selectionBorderSize"
                                    android:right="@dimen/selectionBorderSize" />
                            </bitmap>
                        </item>
                    </layer-list>
                </inset>
            </item>
        </layer-list>
    </item>

    <item>
        <shape android:shape="rectangle">
            <solid android:color="#ffffff" />
        </shape>
    </item>
</selector>

如果您不想玩“查找2个差异”，唯一需要更改的是

标记中的图像

我在这里感到浑身湿透。有没有一种方法可以重复使用这个可拉伸的部件

---

1 WET，例如not

简而言之：XML可绘制文件没有参数，因此这可能会变得有点复杂

通常我会尝试将所有单个

内容分离到单独的可绘制文件中，然后将它们包含在

中。然后，这些可以在其他抽屉中重复使用

例如，您可以将以下项目移动到单独的文件中：

<item>
    <shape android:shape="rectangle">
        <solid android:color="#ffffff" />
    </shape>
</item>

现在，我们需要定义一个Gradle任务，将可绘制模板复制到实际的

/res/drawable

文件夹中，并包含所需的位图可绘制内容：

def drawablesToGenerate = ['sharp5', 'sharp6', 'sharp7', 'sharp8']  // bitmap names
task drawableTemplate << {
    drawablesToGenerate.each { drawableName ->  // for each drawable
        copy {
            println("copy template for ${drawableName}")
            from 'src/main/res/raw'  // source folder
            into 'src/main/res/drawable'  // target folder
            include 'drawable_template.xml'  // template file
            // rename file to final drawable
            rename('drawable_template.xml', "drawable_gen_${drawableName}.xml")
            expand(bitmapdrawable: "${drawableName}")
        }
    }
}
preBuild.dependsOn drawableTemplate

def drawablesToGenerate=['sharp5'，'sharp6'，'sharp7'，'sharp8']//位图名称
任务drawableTemplate//用于每个drawableTemplate
抄袭{
println（“复制${drawableName}的模板”）
从'src/main/res/raw'//源文件夹
进入'src/main/res/drawable'//目标文件夹
包括“drawable_template.xml”//模板文件
//将文件重命名为最终可绘制
重命名（'drawable_template.xml'，“drawable_gen${drawableName}.xml”）
展开（bitmapdrawable:“${drawableName}”）
}
}
}
preBuild.dependsOn drawableTemplate

该脚本可以放入应用程序（模块）的

build.gradle

文件中

现在，包含不同位图的最终绘图是在编译时从单个模板文件生成的。它们的名称为

drawable\u gen\u sharpX.xml

，可以用作普通的drawable

def drawablesToGenerate = ['sharp5', 'sharp6', 'sharp7', 'sharp8']  // bitmap names
task drawableTemplate << {
    drawablesToGenerate.each { drawableName ->  // for each drawable
        copy {
            println("copy template for ${drawableName}")
            from 'src/main/res/raw'  // source folder
            into 'src/main/res/drawable'  // target folder
            include 'drawable_template.xml'  // template file
            // rename file to final drawable
            rename('drawable_template.xml', "drawable_gen_${drawableName}.xml")
            expand(bitmapdrawable: "${drawableName}")
        }
    }
}
preBuild.dependsOn drawableTemplate