Android 将图片添加到按钮
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Android add image to button
提问by stealthjong
I want to add an image to a Button(no imagebutton, as the particular button can either contain text or an image; plus the imagebutton has the same problem), while still retaining the original android-style button. So adding android:backgroundin the XML doesn't cut it, as that will remove the android default button with rounded corners etc. (android.R.drawable.btn_default)
我想将图像添加到Button（不imagebutton，因为特定按钮可以包含文本或图像；加上图像按钮具有相同的问题），同时仍保留原始的 android 样式按钮。所以添加android:backgroundXML 并不会削减它，因为这将删除带有圆角等的 android 默认按钮。(android.R.drawable.btn_default)
Is this in any way possible?
这有可能吗？
I think one way is to make a 9patchimage for the button pressed (one for up and one for down) and onTouch Action_DOWNmake a layered background drawable and put that onto the button, and doing the same thing but with another 9patchfor onTouch Action_UP, but I think that will decrease the performance of the application substantially, as that will require quite a lot of resource reading and layer merging for all the button clicks (and for my application, that will be quite a lot). Is what I state above correct?
我认为一种方法是为9patch按下的按钮制作一个图像（一个用于向上，一个用于向下）onTouch Action_DOWN并使分层背景可绘制并将其放在按钮上，然后做同样的事情但使用另一个9patchfor onTouch Action_UP，但我认为这会显着降低应用程序的性能，因为这将需要大量资源读取和所有按钮点击的图层合并（对于我的应用程序，这将是相当多的）。我上面说的对吗？
EDIT: I can't declare the source of the image in the XML, because I get the images from a web service, so anything can be put on the Buttons, but it has to happen programmatically.
编辑：我无法在 XML 中声明图像的来源，因为我从 Web 服务获取图像，所以任何东西都可以放在按钮上，但它必须以编程方式发生。
回答by Ridcully
This can be done using the android:drawableTop, android:drawableBottom, android:drawableLeft, android:drawableRightattributes in your layout.xml.
这可以使用layout.xml 中的android:drawableTop, android:drawableBottom, android:drawableLeft,android:drawableRight属性来完成。
回答by Dhina k
<Button
android:layout_width="0dp"
android:layout_weight="1"
android:background="@drawable/home_button"
android:drawableLeft="@android:drawable/ic_menu_edit"
android:drawablePadding="6dp"
android:gravity="left|center"
android:height="60dp"
android:padding="6dp"
android:text="AndroidDhina"
android:textColor="#000"
android:textStyle="bold" />
for more info http://androiddhina.blogspot.in/2015/09/how-to-add-image-inside-button.html
更多信息http://androiddhina.blogspot.in/2015/09/how-to-add-image-inside-button.html
回答by Dipak Keshariya
Set below Property of Button for Display Image with Text, using this property image is displaying above text.
设置下面的按钮属性用于显示带有文本的图像，使用此属性图像显示在文本上方。
<Button android:drawableTop="@drawable/ic_launcher"/>
回答by Eldhose M Babu
For setting Image :
用于设置图像：
btn.setBackgroundResource(R.drawable.ic_launcher);
For setting text :
用于设置文本：
btn.setText("My Button");
Code :
代码 ：
private Drawable buttonDrawable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final Button btn=(Button) findViewById(R.id.button1);
buttonDrawable=btn.getBackground();
//Setting the image.
btn.setBackgroundResource(R.drawable.ic_launcher);
btn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
/*Removing image and setting text*/
btn.setBackgroundDrawable(buttonDrawable);
btn.setText("My Button");
}
});
}
回答by weakwire
You can create your own drawable with multiple states and set that to background
您可以使用多种状态创建自己的可绘制对象并将其设置为背景
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_enabled="false"
android:drawable="@drawable/selected" />
<item android:drawable="@drawable/normal" />
</selector>
Drawables can have rounded corners like so.
Drawables 可以有这样的圆角。
<corners android:topLeftRadius="5dp" android:topRightRadius="5dp"
android:bottomLeftRadius="0.2dp" android:bottomRightRadius="0.2dp"/>
