更改背景颜色单选按钮的Android [英] Changing background color with Radio Buttons Android
本文介绍了更改背景颜色单选按钮的Android的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我试图通过从RadioGroup中选择一个单选按钮,以改变我的应用程序的选项卡的背景下,但我不知道如何去这一点。
I am attempting to change the background of a tab of my application by selecting a Radio Button from a RadioGroup, however I am not sure how to go about this.
到目前为止,我有
Favs.java:
So far I have Favs.java:
import android.app.Activity;
import android.os.Bundle;
public class Favs extends Activity {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.favs);
}
}
一个指向该.xml文件 - > favs.xml
which points to this .xml file -> favs.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="fill_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="What is your favorite color?"
android:padding="3dip"/>
<RadioGroup android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RadioButton android:id="@+id/radio_red"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Red"
android:onClick="onClick" />
<RadioButton android:id="@+id/radio_yellow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Yellow" />
</RadioGroup>
</LinearLayout>
据我了解,安卓的onClick =的onClick需要在那里,但是我不知道在这之后该怎么办
I understand that the android:onClick="onClick" needs to be there however I have no idea what to do after this.
推荐答案
喜根据单选按钮选择使用下面code为改变背景
hi use below code for changing the background according to radio button selection
的main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="fill_parent"
android:orientation="vertical"
android:id="@+id/LinearLayout"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="fill_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="What is your favorite color?"
android:padding="3dip"/>
<RadioGroup android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/Group1"
android:orientation="vertical">
<RadioButton android:id="@+id/radio_red"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Red"
/>
<RadioButton android:id="@+id/radio_yellow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Yellow" />
</RadioGroup>
</LinearLayout>
活动
public class Change extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final LinearLayout ll=(LinearLayout) findViewById(R.id.LinearLayout);
final RadioButton radio_red = (RadioButton) findViewById(R.id.radio_red);
final RadioButton radio_yellow = (RadioButton) findViewById(R.id.radio_yellow);
radio_red.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
ll.setBackgroundColor(Color.RED);
}
});
radio_yellow.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
ll.setBackgroundColor(Color.YELLOW);
}
});
}
}
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