自定义归属地风格弹窗

package com.loaderman.addressdialogdemo;

import android.app.Dialog;
import android.content.Context;
import android.view.Gravity;
import android.view.Window;
import android.view.WindowManager;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;

/**
 * 
 * <p/>
 * 自定义归属地风格弹窗
 * <p/>
 * 1. 给dialog设置布局,setContentView
 * 2. 去掉标题栏和背景
 * 去掉标题栏
 * <item name="android:windowNoTitle">true</item>
 * 去掉背景
 * <item name="android:windowBackground">@color/white</item>
 * <p/>
 * 3. dialog显示在屏幕下方, 修改窗口的位置
 */
public class AddressDialog extends Dialog {

    private ListView lvList;

    public AddressDialog(Context context) {
        //指定dialog的样式
        super(context, R.style.AddressDialogStyle);

        //给dialog设置布局
        setContentView(R.layout.dialog_address);

        //显示在屏幕正下方
        //原理: 修改dialog所在窗口Window的位置, dialog随窗口显示
        Window window = getWindow();//获取dialog所在的窗口对象
        WindowManager.LayoutParams attributes = window.getAttributes();//获取当前窗口的属性(布局参数)
        attributes.gravity = Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL;//靠下居中显示
        window.setAttributes(attributes);//重新设置布局参数
        lvList = (ListView) findViewById(R.id.lv_list);
    }

    //为了增强扩展性, 可以由外部传递adapter进来, 决定ListView的显示内容
    public void setAdapter(BaseAdapter adapter) {
        lvList.setAdapter(adapter);
    }

    //设置条目点击事件
    public void setOnItemClickListener(AdapterView.OnItemClickListener listener) {
        lvList.setOnItemClickListener(listener);
    }
}

package com.loaderman.addressdialogdemo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private int[] mIcons = new int[]{R.drawable.shape_address_normal, R.drawable
            .shape_address_orange, R.drawable.shape_address_blue, R.drawable.shape_address_gray,
            R.drawable.shape_address_green};

    private String[] mNames = new String[]{"半透明", "活力橙", "卫士蓝", "金属灰", "苹果绿"};

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

    public void set(View view) {
        //显示弹窗
        //dialog中传的context必须是activity对象
        final AddressDialog dialog = new AddressDialog(MainActivity.this);
        dialog.setAdapter(new AddressStyleAdapter());
        dialog.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                //1. 记录当前被选中的条目的位置, 保存在sp中
                PrefUtils.putInt(getApplicationContext(), "address_style", position);
                //2. 隐藏弹窗
                dialog.dismiss();
            }
        });

        dialog.show();
    }

    //归属地样式弹窗adapter
    class AddressStyleAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return mNames.length;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view = View.inflate(MainActivity.this, R.layout.item_address, null);

            ImageView ivIcon = (ImageView) view.findViewById(R.id.iv_icon);
            TextView tvName = (TextView) view.findViewById(R.id.tv_name);
            ImageView ivSelect = (ImageView) view.findViewById(R.id.iv_select);

            ivIcon.setImageResource(mIcons[position]);
            tvName.setText(mNames[position]);

            //从sp中取出当前选中的样式位置
            //和当前position比较
            int pos = PrefUtils.getInt(getApplicationContext(),"address_style", 0);//默认是半透明
            if (position == pos) {
                //当前条目被选中
                //显示勾选图片
                ivSelect.setVisibility(View.VISIBLE);
            } else {
                ivSelect.setVisibility(View.GONE);
            }

            return view;
        }
    }
}

package com.loaderman.addressdialogdemo;

import android.content.Context;
import android.content.SharedPreferences;

public class PrefUtils {
    public static void putInt(Context ctx, String key, int value) {
        SharedPreferences sp = ctx.getSharedPreferences("config", Context.MODE_PRIVATE);
        sp.edit().putInt(key, value).commit();
    }

    public static int getInt(Context ctx, String key, int defValue) {
        SharedPreferences sp = ctx.getSharedPreferences("config", Context.MODE_PRIVATE);
        return sp.getInt(key, defValue);
    }
}