定义单选列表dialog

dialog有很多种，这个例子演示的是单选列表dialog；
1数据由外部来定义和传入；
2具体的item响应事件也由具体的调用者来实现，dialog内部定义接口即可。

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demo的演示

GIF.gif

dialog的代码如下:

package study.lzl.animationtest.view.dialog;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.Toast;

import java.util.List;

import study.lzl.animationtest.R;

/**
 * @author: Created by lzl on 2017/6/17.
 * @function: 自定义单选列表dialog
 * @description:
 */

public class SingleSelectDialog extends Dialog {
    private ImageView mCloseImg;//关闭按钮
    private Button mSureBtn;//确定选择按钮
    private ListView mListView;//列表
    private Context mContext;
    private List<String> mList;
    /**
     * 记录当前选中的值
     */
    private String currentSelectItemName;
    /**
     * 是否被点击了 如果被点击了 则此时可以点击确定按钮
     */
    private boolean isBeClick=false;

    public SingleSelectDialog(Context context,List<String> list) {
        super(context, R.style.MyDialog);
        this.mContext=context;
        this.mList=list;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_singleselect_dialog);
        //点击外部区域不可取消
        setCanceledOnTouchOutside(false);
        initView();
        initListViewData();
        initEvent();
    }

    /**
     * 加载列表数据
     */
    private void initListViewData() {
        mListView.setAdapter(new ArrayAdapter<String>(mContext,R.layout.layout_singleselect_dialog_item,mList));
    }

    private void initView() {
        mCloseImg= (ImageView) findViewById(R.id.single_select_close_btn);
        mSureBtn= (Button) findViewById(R.id.single_select_sure_btn);
        mListView= (ListView) findViewById(R.id.singselect_list);

    }

    private void initEvent() {
        mCloseImg.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                dismiss();
            }
        });
        mSureBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
            if (currentSelectItemName!=null&&!currentSelectItemName.equals("")){
                Toast.makeText(mContext,"你当前选中的item"+currentSelectItemName,Toast.LENGTH_SHORT).show();
                }else {
                Toast.makeText(mContext,"您当前未选择任何项",Toast.LENGTH_SHORT).show();
            }

            }
        });

        mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
                if(mList!=null){
                    currentSelectItemName=mList.get(position);
                }
            }
        });
    }
}

布局文件:layout_singleselect_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="200dp"
    android:layout_height="300dp"
    android:background="@drawable/free_dialog_bg">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:orientation="horizontal"
        android:layout_margin="5dp">
        <TextView
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="8"
            android:text="单选列表dialog"
            android:textSize="15dp"
            android:textColor="@color/blue"
            android:gravity="center"/>
        <ImageView
            android:id="@+id/single_select_close_btn"
            android:layout_width="30dp"
            android:layout_height="30dp"
            android:src="@mipmap/close_small"
            android:layout_gravity="center_vertical"/>
    </LinearLayout>
    <ListView
        android:id="@+id/singselect_list"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1">

    </ListView>
    <Button
        android:id="@+id/single_select_sure_btn"
        android:layout_width="match_parent"
        android:layout_height="35dp"
        android:background="@drawable/close_btn_bg"
        android:layout_marginLeft="30dp"
        android:layout_marginTop="10dp"
        android:layout_marginRight="30dp"
        android:text="确定"/>
</LinearLayout>

布局文件用到的drawable资源文件:free_dialog_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--背景色-->
    <solid android:color="#ffffff" />
    <!--描边-->
    <stroke
        android:width="0.8dp"
        android:color="#ffffff" />
    <!-- 圆角 -->
    <corners android:radius="10dp" />

</shape>

确定按钮用到的背景drawable资源文件:close_btn_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <!--填充的背景色-->
    <solid android:color="@color/colorAccent"/>
    <corners android:radius="20dp" />
</shape>