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  • 写一个背景渐变的TextView输入框

    1:在res文件夹下新建一个drawble文件夹,并新建一个背景文件如writebg.xml

    <?xml version="1.0" encoding="utf-8"?>
    <shape xmlns:android="http://schemas.android.com/apk/res/android" >
        <!-- 设置圆角 -->
        <corners android:radius="5dip"/>
        <!-- 设置渐变色 -->
        <gradient android:startColor="@android:color/white"
            android:endColor="@android:color/holo_blue_bright"/>
        <!-- 设置边框颜色和宽度 -->
        <stroke android:width="1dp"
            android:color="@android:color/black"
            />
    </shape>

    2: 在activity.xml文件中使用writebg.xml文件作为编辑框的背景,并设置字体位置

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingBottom="@dimen/activity_vertical_margin"
        android:paddingLeft="@dimen/activity_horizontal_margin"
        android:paddingRight="@dimen/activity_horizontal_margin"
        android:paddingTop="@dimen/activity_vertical_margin"
        tools:context=".MainActivity" >
        <EditText 
            android:layout_width="match_parent"
            android:gravity="center|right"
            android:layout_height="60dp"
            android:id="@+id/et_input"
            android:background="@drawable/writebg"
            android:editable="false"
            />
    </RelativeLayout>

    3:在AndroidManifest.xml文件中设置第一个activity的主题背景

    <?xml version="1.0" encoding="utf-8"?>
    <manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="com.thinker.caculatordemo"
        android:versionCode="1"
        android:versionName="1.0" >
    
        <uses-sdk
            android:minSdkVersion="14"
            android:targetSdkVersion="18" />
    
        <application
            android:allowBackup="true"
            android:icon="@drawable/ic_launcher"
            android:label="@string/app_name"
            android:theme="@style/AppTheme" >
            <activity
                android:name="com.thinker.caculatordemo.MainActivity"
                android:label="@string/app_name" 
                <!-- 设置页面的主题背景 -->
                android:theme="@android:style/Theme.Black.NoTitleBar"
                >
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
    
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
        </application>
    
    </manifest>
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  • 原文地址:https://www.cnblogs.com/rain-1/p/5158748.html
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