带不同颜色的标准 Android 按钮?
本例演示了如何创建带不同颜色的标准 Android 按钮。
步骤 1 − 在 Android Studio 中创建一个新项目,转到文件 ⇒ 新建项目,并填写所有必需的详细信息以创建新项目。
步骤 2 − 将以下代码添加到 res/layout/activity_main.xml。
<?xml version = "1.0" encoding = "utf-8"?> <LinearLayout xmlns:android = "http://schemas.android.com/apk/res/android" xmlns:app = "http://schemas.android.com/apk/res-auto" xmlns:tools = "http://schemas.android.com/tools" android:layout_width = "match_parent" android:gravity = "center" android:layout_height = "match_parent" tools:context = ".MainActivity" android:orientation = "vertical"> <Button android:id = "@+id/parcleObject" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_alignParentTop = "true" android:layout_centerHorizontal = "true" android:layout_marginTop = "27dp" android:background = "@drawable/background" android:text = "Click here"/> </LinearLayout>
在上面的代码中,我们使用了按钮视图来显示不同的颜色。
步骤 3 − 将以下代码添加到 drawable/background.xml
<?xml version = "1.0" encoding = "utf-8"?> <selector xmlns:android = "http://schemas.android.com/apk/res/android"> <item android:state_pressed = "true" > <shape> <gradient android:startColor = "#f0ff00" android:endColor = "#d9dd95" android:angle = "270" /> <stroke android:width = "3dp" android:color = "#d1d3e3" /> <corners android:radius = "3dp" /> <padding android:left = "10dp" android:top = "10dp" android:right = "10dp" android:bottom = "10dp" /> </shape> </item> <item android:state_focused = "true" > <shape> <gradient android:endColor = "#fd5900" android:startColor = "#eca680" android:angle = "270" /> <stroke android:width = "3dp" android:color = "#d1d3e3" /> <corners android:radius = "3dp" /> <padding android:left = "10dp" android:top = "10dp" android:right = "10dp" android:bottom = "10dp" /> </shape> </item> <item> <shape> <gradient android:endColor = "#4356e7" android:startColor = "#a1aaee" android:angle = "270" /> <stroke android:width = "3dp" android:color = "#d1d3e3" /> <corners android:radius = "3dp" /> <padding android:left = "10dp" android:top = "10dp" android:right = "10dp" android:bottom = "10dp" /> </shape> </item> </selector>
让我们尝试运行您的应用程序。我假设您已将实际的 Android 移动设备连接到您的计算机。要在 Android Studio 中运行应用程序,请打开项目的某个活动文件,然后单击运行
工具栏中的图标。选择您的移动设备作为选项,然后检查您的移动设备,它将显示您的默认屏幕 –

现在点击按钮,结果将如下所示 –

点击 这里 下载项目代码
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