[Android学UI之]实现分断Button，模仿MIUI设置页面顶部Button

功能：

拼接的Button。

使用说明：

用RidaoGroup包裹几个RidaoButton，实现拼接。

还是看图，更真实！！！

页面做的比较简单，这个功能也不太难。。这只是其中的实现方式之一。有其它更好的方式，请告之。

下面还是看代码吧：

界面Activity:

[html]
package com.bbswp.topbuttondemo;

import com.bbswp.topbuttondemo.view.SegmentedRadioGroup;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity implements OnCheckedChangeListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        SegmentedRadioGroup group = (SegmentedRadioGroup) findViewById(R.id.segment_text);
        group.setOnCheckedChangeListener(this);

    }

    @Override
    public void onCheckedChanged(RadioGroup group, int checkedId) {
        switch (checkedId) {
            case R.id.button_one:
                toast(1);
                break;

            case R.id.button_two:
                toast(2);
                break;

            case R.id.button_three:
                toast(3);
                break;

            default:
                break;
        }

    }

    public void onClick(View view) {
        toast(4);
    }

    private void toast(int id) {
        Toast.makeText(this, "点击：" + id, 0).show();
    }

}

自定义一个View，用于包裹RidaoButton.

看代码：

[html]
/*
* Copyright (C) 2011 Make Ramen, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*      http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.bbswp.topbuttondemo.view;

import com.bbswp.topbuttondemo.R;

import android.content.Context;
import android.util.AttributeSet;
import android.widget.RadioGroup;

public class SegmentedRadioGroup extends RadioGroup {

    public SegmentedRadioGroup(Context context) {
        super(context);
    }

    public SegmentedRadioGroup(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        changeButtonsImages();
    }

    private void changeButtonsImages(){
        int count = super.getChildCount();

        if(count > 1){
            super.getChildAt(0).setBackgroundResource(R.drawable.segment_radio_left);
            for(int i=1; i < count-1; i++){
                super.getChildAt(i).setBackgroundResource(R.drawable.segment_radio_mid);
            }
            super.getChildAt(count-1).setBackgroundResource(R.drawable.segment_radio_right);
        }else if (count == 1){
            super.getChildAt(0).setBackgroundResource(R.drawable.segment_radio_button);
        }
    }
}

界面少不了xml。。。看看吧：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <com.bbswp.topbuttondemo.view.SegmentedRadioGroup
        android:id="@+id/segment_text"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dip"
        android:checkedButton="@+id/butto

补充：移动开发 , Android ,