以编程方式更改单选按钮的背景 [英] Change background for radio button programatically
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问题描述
我有一个带有两个RadioButton的 RadioGroup 。我想在禁用它们时以编程方式更改它们的颜色。
< RadioGroup
android：id = @ + id / radio_group_transfer
android：layout_width = match_parent
android：layout_height = wrap_content
android：layout_marginBottom = 22dp
android：layout_marginTop = 4dp
android：gravity = center_vertical
android：layoutDirection = ltr
android：orientation = horizontal>
< RadioButton
android：id = @ + id / national_id_docs
android：layout_width = match_parent
android：layout_height = wrap_content
android：layout_weight = 1
android：background = @ drawable / radio_btn_selector_left
android：button = @ null
android：checked = true
android：gravity = center
android：padding = 10dp
android：text = @ string / national_id
android：textColor = @ drawable / radio_btn_textcolor_selector
style = @ style / SimpleTextStyleSemiBold />
< RadioButton
android：id = @ + id / passport
android：layout_width = match_parent
android：layout_height = wrap_content
android：layout_weight = 1
android：background = @ drawable / radio_btn_selector_right
android：button = @ null
android：gravity = center
android：padding = 10dp
android：text = @ string / passport
android：textColor = @ drawable / radio_btn_textcolor_selector
style = @ style / SimpleTextStyleSemiBold />
< / RadioGroup>
我用灰色创建了新的XML选择器，但是当我设置背景时，它不起作用。 / p>
radio_btn_selector_left_disabled.xml
< ？xml version = 1.0 encoding = utf-8？>
<选择器xmlns：android = http://schemas.android.com/apk/res/android>
< item android：state_checked = true>
< shape>
< solid android：color = @ color / employee_non_editable_color_grey />
<描边android：width = 1dp android：color = @ color / employee_non_editable_color_grey />
< corners android：bottomLeftRadius = 3dp android：topLeftRadius = 3dp />
< / shape>
< / item>
< item android：state_checked = false>
< shape android：shape = rectangle>
< solid android：color =＃ffffff />
<描边android：width = 1dp android：color = @ color / employee_non_editable_color_grey />
< corners android：bottomLeftRadius = 3dp android：topLeftRadius = 3dp />
< / shape>
< / item>
< / selector>
我尝试过
national_id_docs.setBackground（R.drawable.radio_btn_selector_left_disabled）;
您能否建议使用 radio_btn_selector_left_disabled 是单选按钮？
解决方案
final RadioGroup rg =（RadioGroup） findViewById（R.id.radio_group_transfer）;
final RadioButton national =（RadioButton）findViewById（R.id.national_id_docs）;
最终RadioButton护照=（RadioButton）findViewById（R.id.passport）;
rg.setOnCheckedChangeListener（new RadioGroup.OnCheckedChangeListener（）{
@Override
public void onCheckedChanged（RadioGroup group，intcheckedId）{
if（national.isChecked（ ））{
national.setTextColor（Color.BLUE）;
national.setBackgroundColor（Color.BLUE）;
passport.setTextColor（Color.BLACK）;
password.setBackgroundColor（Color.BLACK）;
}
if（passport.isChecked（））{
passport.setTextColor（Color.BLUE）;
passport.setBackgroundColor（Color。 BLUE）;
national.setTextColor（Color.BLACK）;
national.setBackgroundColor（Color.BLACK）;
}
}
}）；
I have a RadioGroup with two RadioButtons. I want to change the color of them programmatically when they are disabled.
<RadioGroup
android:id="@+id/radio_group_transfer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="22dp"
android:layout_marginTop="4dp"
android:gravity="center_vertical"
android:layoutDirection="ltr"
android:orientation="horizontal">
<RadioButton
android:id="@+id/national_id_docs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/radio_btn_selector_left"
android:button="@null"
android:checked="true"
android:gravity="center"
android:padding="10dp"
android:text="@string/national_id"
android:textColor="@drawable/radio_btn_textcolor_selector"
style="@style/SimpleTextStyleSemiBold"/>
<RadioButton
android:id="@+id/passport"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/radio_btn_selector_right"
android:button="@null"
android:gravity="center"
android:padding="10dp"
android:text="@string/passport"
android:textColor="@drawable/radio_btn_textcolor_selector"
style="@style/SimpleTextStyleSemiBold"/>
</RadioGroup>
I have created new XML selectors with gray colors but when I set the background it does not work.
radio_btn_selector_left_disabled.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true">
<shape>
<solid android:color="@color/employee_non_editable_color_grey" />
<stroke android:width="1dp" android:color="@color/employee_non_editable_color_grey" />
<corners android:bottomLeftRadius="3dp" android:topLeftRadius="3dp"/>
</shape>
</item>
<item android:state_checked="false">
<shape android:shape="rectangle">
<solid android:color="#ffffff" />
<stroke android:width="1dp" android:color="@color/employee_non_editable_color_grey" />
<corners android:bottomLeftRadius="3dp" android:topLeftRadius="3dp"/>
</shape>
</item>
</selector>
I tried
national_id_docs.setBackground(R.drawable.radio_btn_selector_left_disabled);
could you suggest what is the best way to use the radio_btn_selector_left_disabled for the radio button?
解决方案
final RadioGroup rg = (RadioGroup) findViewById(R.id.radio_group_transfer);
final RadioButton national = (RadioButton) findViewById(R.id.national_id_docs);
final RadioButton passport = (RadioButton) findViewById(R.id.passport);
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
if (national.isChecked()) {
national.setTextColor(Color.BLUE);
national.setBackgroundColor(Color.BLUE);
passport.setTextColor(Color.BLACK);
passport.setBackgroundColor(Color.BLACK);
}
if (passport.isChecked()){
passport.setTextColor(Color.BLUE);
passport.setBackgroundColor(Color.BLUE);
national.setTextColor(Color.BLACK);
national.setBackgroundColor(Color.BLACK);
}
}
});
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