To summarize setting icon in three ways:
(1) button attribute: mainly used for less demanding icon size, spacing requirements are not high occasion.
(2) background properties: mainly used in the case where an icon can be displayed in a larger space.
(3) drawableLeft properties: mainly used for requiring interval between the icons and text applications.
To set the android Note the use of background or drawableLeft when: button = "@ null"
monitor:
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
}
});
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Here is an example:
renderings:
Layout file: activity_radio_button.xml use
<RadioGroup
android:id="@+id/radioGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="horizontal">
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:button="@null"
android:checked="true"
android:drawablePadding="10dp"
android:drawableTop="@drawable/selback"
android:gravity="center_horizontal"
android:text="男"
android:textColor="#FF0033"
/>
<RadioButton
android:id="@+id/radioButton2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:button="@null"
android:drawablePadding="10dp"
android:drawableTop="@drawable/selback"
android:gravity="center_horizontal"
android:text="女"
android:textColor="#000000"
/>
</RadioGroup>
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Selector: selback.xml
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:drawable="@mipmap/on"/>
<item android:drawable="@mipmap/off"/>
</selector>
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选择器用到的图片：
RadioButtonActivity the selected monitor
package rolechina.jremm.com.test4;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RelativeLayout;
import android.widget.Toast;
public class RadioButtonActivity extends Activity {
private RadioGroup radioGroup;
private RadioButton radioButton1;
private RadioButton radioButton2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_radio_button);
radioGroup = findViewById(R.id.radioGroup);
radioButton1 = findViewById(R.id.radioButton1);
radioButton2 = findViewById(R.id.radioButton2);
radioGroup.setOnCheckedChangeListener (new new RadioGroup.OnCheckedChangeListener () {
@Override
public void OnCheckedChanged (RadioGroup Group, int checkedId) {
// display the selected text in red, black display is not selected
IF (radioButton1.isChecked ()) {
radioButton1.setTextColor (Color. parseColor ( "# FF0033"));
} the else {
radioButton1.setTextColor (Color.parseColor ( "# 000000"));
}
if(radioButton2.isChecked(http://www.my516.com)) {
radioButton2.setTextColor(Color.parseColor("#FF0033"));
}else{
radioButton2.setTextColor(Color.parseColor("#000000"));
}
}
});
}
}
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