英文:
How to make Image Buttons act like Radio buttons
问题
我正在尝试使图像按钮的行为类似于单选按钮（Radio buttons）。让我解释一下。我有一个基本布局，其中包含一个图像按钮（Image Button）和一个文本视图（TextView），我会加载不同的图像和文本。
XML布局：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageButton
android:id="@+id/button_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#FFFFFF"/>
<TextView
android:id="@+id/text_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
</LinearLayout>
Java方法：
LinearLayout categoryLayout = view.findViewById(R.id.categories_layout);
for (int i = 0; i<categories.size(); i++) {
final String name = categories.get(i).name;
final int resource = categories.get(i).resource;
View v = getLayoutInflater().inflate(R.layout.choose_category, null);
final TextView text = v.findViewById(R.id.text_category);
text.setText(name);
ImageButton button = v.findViewById(R.id.button_category);
button.setImageResource(resource);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedCategory = resource;
text.setTypeface(text.getTypeface(), Typeface.BOLD);
}
});
categoryLayout.addView(v);
}
每当单击图像时，文本将设置为粗体，以指示单击了哪个按钮。我的问题是，我只想一次只能点击一个按钮。我考虑过，每次单击按钮时，重置所有文本视图的外观，只保留上次单击的文本为粗体。然而，我不知道如何遍历生成的所有布局。
我希望我表达清楚了，如果你能帮助我，谢谢！
英文:
I'm trying to make Image buttons act like Radio buttons. Let me explain. I have a basic layout containing an Image Button and a TextView, that I load with different images and texts.
XML layout :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageButton
android:id="@+id/button_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="#FFFFFF"/>
<TextView
android:id="@+id/text_category"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"/>
</LinearLayout>
Java method :
LinearLayout categoryLayout = view.findViewById(R.id.categories_layout);
for (int i = 0; i<categories.size(); i++) {
final String name = categories.get(i).name;
final int resource = categories.get(i).resource;
View v = getLayoutInflater().inflate(R.layout.choose_category, null);
final TextView text = v.findViewById(R.id.text_category);
text.setText(name);
ImageButton button = v.findViewById(R.id.button_category);
button.setImageResource(resource);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedCategory = resource;
text.setTypeface(text.getTypeface(), Typeface.BOLD);
}
});
categoryLayout.addView(v);
}
Every time an image is clicked, the text is set bold to indicate which button was clicked. My problem is that I only want one button to be clickable at a time. I thought of, each time a button is clicked, reseting the appearance of all TextView, only leaving the last text that was clicked as bold. However, I don't know how to navigate through all layouts that have been generated.
I hope I was clear, thank you if you can help me !
答案1
得分: 0
这可能不是解决这个问题最有效的方法，但它可以工作。每次单击按钮时，所选的图标都会被保存。然后，我在RadioGroup上使用removeAllViews()方法，重新创建视图。我只需确保先前所选图标下方的文本设置为粗体。
英文:
That might not be the most efficient way to solve this problem, but it works. Every time the button is clicked, the icon selected is saved. Then, I use removeAllViews() method on the RadioGroup, and recreate the views. I just make sure the text below the previously selected icon is set bold.
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