如何改变与每一个点击按钮的形象？ [英] how to change the image of a button with every click?

问题描述

我在布局创建一个按钮。在绘制对象文件夹，我创建了一个 XML文件的 btn01_state 。该 btn01_state.xml 分配给按钮我创建通过安卓背景= @绘制/ btn01_state

现在，在按钮有一个默认的图片 img1.when我点击在按钮时，此搜索变为IMG2，有一次我松开点击的鼠标按钮，图像2又变再IMG1。

就是我想要做的是，要改变按钮的图像埃维点击。的

为例，最初 btn01有img01

如果btn01是pressed ==>的btn01设置IMG为img02，并保持img02直到btn01是pressed了。现在，btn01有img02就可以了。

当btn01是pressed，设置img01为btn01。

我希望这澄清了更多的什么，我想做的事情。

btn_selector

 ＆LT;选择的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android＆GT;
＆LT;项目机器人：可绘制=@可绘制/ android_blue
      机器人：STATE_ pressed =真/＆GT;
＆LT;项目机器人：可绘制=@可绘制/ ic_launcher
      机器人：state_focused =真/＆GT;
＆LT;项目机器人：可绘制=@可绘制/ ic_launcher/＆GT;
 

的main.xml

 ＆LT;按钮
    机器人：layout_height =WRAP_CONTENT
    机器人：layout_width =WRAP_CONTENT
    机器人：ID =@ + ID / btn01
    机器人：背景=@可绘制/ btn01_state/＆GT;
 

解决方案

您可以轻松在code做到这一点。

 布尔是pssed $ P $ = FALSE;
button.setOnClickListener（buttonListener）;

OnClickListener buttonListener =新OnClickListener（）{
    @覆盖
    公共无效的onClick（视图v）{
        如果（是pressed）
           button.setBackgroundResource（R.drawable.icon1）;
        其他
           button.setBackgroundResource（R.drawable.icon2）;

        ！是pressed =是pressed;
   }
};
 

I created a button in the layout . In the Drawable folder I created a XML file named btn01_state. The btn01_state.xml is assigned to the button i created through "android:background=@drawable/btn01_state"

Now, the button has a default image img1.when i click on the button, the image1 changes to img2, and once i release the clicked mouse button, the image2 again changed to img1 again.

what i want to do is,to change the image of the button with evey click.

for an example, initially btn01 has 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.

When btn01 is pressed, set img01 to btn01.

I hope this clarified more what i want to do.

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

<Button 
    android:layout_height="wrap_content"
    android:layout_width="wrap_content"
    android:id="@+id/btn01"
    android:background="@drawable/btn01_state"/>

解决方案

You can do it easily within the code.

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;
   }
};

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