ImageView中的填充不起作用 [英] Padding in ImageView is not Working

问题描述

我想制作一个包含顶部栏和图像的屏幕.我将TextView用于顶部栏并将ImageView用于图像.我只想将填充设置为图像视图.我的xml在下面给出.填充操作不起作用.谁能解释为什么和做什么?

I want to make a screen which contains a top bar and an image. I use TextView for the top bar and ImageView for the image. I want to set padding only to the image view. My xml is given below. The padding action is not working. Can anybody explain why and what to do?

<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:background="@drawable/background" >

    <TextView android:id="@+id/topBar"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="@string/home"
        android:textSize="20sp"
        android:textColor="#ffffff"
        android:textStyle="bold"
        android:shadowColor="#000000"
        android:shadowRadius="1"
        android:shadowDy="-1" 
        android:gravity="center"
        android:background="@drawable/navBar"/>

    <ImageView android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"   
        android:paddingLeft="10dp"
        android:paddingTop="10dp"
        android:paddingRight="10dp"
        android:paddingBottom="10dp"
        android:layout_below="@+id/topBar"        
        android:background="@drawable/image"/>

</RelativeLayout>

推荐答案

您应使用layout_margin而不是padding，因此它应如下所示:

You should use layout_margin instead of padding so it should be as following:

<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:background="@drawable/background" >

<TextView android:id="@+id/topBar"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:text="@string/home"
    android:textSize="20sp"
    android:textColor="#ffffff"
    android:textStyle="bold"
    android:shadowColor="#000000"
    android:shadowRadius="1"
    android:shadowDy="-1" 
    android:gravity="center"
    android:background="@drawable/navBar"/>

<ImageView android:id="@+id/image"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"   
    android:layout_marginLeft="10dp"
    android:layout_marginTop="10dp"
    android:layout_marginRight="10dp"
    android:layout_marginBottom="10dp"
    android:layout_below="@+id/topBar"        
    android:background="@drawable/image"/>

，并且您可以为所有方向指定1 layout_margin，而不是使用

and you can specify 1 layout_margin for all directions so instead of using

android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:layout_marginRight="10dp"
android:layout_marginBottom="10dp"

您可以使用:

android:layout_margin="10dip"

希望这是您想要的.否则给我反馈；)

hope this is what you are looking for. give me a feedback otherwise ;)

更新

update

您还可以设置 cropToPadding :

you can set cropToPadding also:

<ImageView 
...
   android:cropToPadding="true"
   android:padding="15dp"
   android:scaleType="centerInside"  
...

这篇关于ImageView中的填充不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！