單選盒

修改單選盒，勾選盒樣式 成 圖片

XML

android:button="@drawable/radiobutton"

程式碼

RadioButton.setButtonDrawable(R.drawable.radiobutton);

自定義

package tw.com.SurveyApp.UI;

import tw.com.SurveyApp.R;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.Canvas;

import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.view.Gravity;

import android.widget.RadioButton;

public class RadioButtonCenter extends RadioButton {

Drawable buttonDrawable;

//相關自定前如下

}

自定義當RadioButton產生時

/**

* 自定義當RadioButton產生時

* @param context

* @param attrs

*/

public RadioButtonCenter(Context context, AttributeSet attrs) {

super(context, attrs);

Resources res = this.getResources();

buttonDrawable = res.getDrawable(R.drawable.radiobutton);

setButtonDrawable(R.drawable.radiobuttonw);

}

自定義當RadioButton設定狀態時

/**

* 自定義當RadioButton設定狀態時

*/

public void setChecked(boolean b){

Resources res = this.getResources();

if(b){

buttonDrawable = res.getDrawable(R.drawable.radiobutton_press);

}else{

buttonDrawable = res.getDrawable(R.drawable.radiobutton);

}

}

自定義RadioButton置中

/**

* 自定義RadioButton置中

*/

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

if (buttonDrawable != null) {

buttonDrawable.setState(getDrawableState());

final int verticalGravity = getGravity()

& Gravity.VERTICAL_GRAVITY_MASK;

final int height = buttonDrawable.getIntrinsicHeight();

int y = 0;

switch (verticalGravity) {

case Gravity.BOTTOM:

y = getHeight() - height;

break;

case Gravity.CENTER_VERTICAL:

y = (getHeight() - height) / 2;

break;

}

int buttonWidth = buttonDrawable.getIntrinsicWidth();

int buttonLeft = (getWidth() - buttonWidth) / 2;

buttonDrawable.setBounds(buttonLeft, y, buttonLeft + buttonWidth, y

+ height);

buttonDrawable.draw(canvas);

}

}