Android 如何在每次单击时更改按钮的图像？
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how to change the image of a button with every click?
提问by Androelpha
I created a buttonin the layout. In the Drawablefolder I created a XML filenamed btn01_state. The btn01_state.xmlis assigned to the buttoni created through "android:background=@drawable/btn01_state"
我button在layout. 在Drawable文件夹中，我创建了一个XML file名为btn01_state. 将btn01_state.xml被分配给button通过创建我“ android:background=@drawable/btn01_state”
Now, the buttonhas a default imageimg1.when i clickon the button, the image1 changes to img2, and once i release the clicked mouse button, the image2 again changed to img1 again.
现在，button有一个默认的imageimg1.when iclick在 上button，image1 更改为 img2，一旦我释放单击的鼠标按钮，image2 再次更改为 img1。
what i want to do is,to change the image of the button with evey click.
我想要做的是，每次点击更改按钮的图像。
for an example, initially btn01 has img01
例如，最初 btn01 有 img01
if btn01 is pressed==> set img of btn01 to img02 and keep img02 till the btn01 is pressed again. Now, btn01 has img02 on it.
如果按下 btn01==> 将 btn01 的 img 设置为 img02 并保持 img02 直到再次按下 btn01。现在，btn01 上有 img02。
When btn01 is pressed, set img01 to btn01.
当按下 btn01 时，将 img01 设置为 btn01。
I hope this clarified more what i want to do.
我希望这能更清楚地说明我想要做什么。
btn_selector:
btn_selector:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/android_blue"
android:state_pressed="true" />
<item android:drawable="@drawable/ic_launcher"
android:state_focused="true" />
<item android:drawable="@drawable/ic_launcher" />
main.xml
主文件
<Button
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:id="@+id/btn01"
android:background="@drawable/btn01_state"/>
回答by Murat Nafiz
You can do it easily within the code.
您可以在代码中轻松完成。
boolean isPressed = false;
button.setOnClickListener(buttonListener);
OnClickListener buttonListener = new OnClickListener() {
@Override
public void onClick(View v) {
if(isPressed)
button.setBackgroundResource(R.drawable.icon1);
else
button.setBackgroundResource(R.drawable.icon2);
isPressed = !isPressed;
}
};
回答by Parag Chauhan
Simple way
简单的方法
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
btn.setBackgroundDrawable(getResources().getDrawable(R.drawable.locationbutton_on));
}
});
回答by Warpzit
Make it in code perhaps. Put a listener on the button and when the button is clicked the background is changed.
也许在代码中制作它。在按钮上放置一个侦听器，单击按钮时背景会发生变化。
