Android选择弹窗(自定义可扩展)

CSDN上有篇Android滚轮时间选择控件（可扩展自定义），阅读量很高，看来大家对这块的需要还是挺大的。版本迭代开发自测完，等待测试提bug。就抽空把项目需求，自己自定义的一个控件分享给需要的人。里面可以学习到Builder创建者模式，还有就是使用接口，一般新手可能不一定会使用。

先想吐槽一下，今天负能量有点多，端午想找人出去玩，都找不到，回家的回家，陪妹子的陪妹子。果然都是一伙重色轻友的人。我也得抓紧了。

好吧，进入正题。先来看看效果图。

1.Hello World是一个TextView控件，用于显示从弹窗选择的内容。里面控件的背景色，标题，文字大小颜色都可以自定义。实际项目中可以用于比如android长按的时候，弹出一些选择的操作，还有就是一些金额选择等等。

主界面

选择弹窗

选择结果

实际项目中

2.布局文件

3.主界面操作

package andrew.selectdialogdemo;

import android.app.Activity;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends Activity {
    private TextView mShowTextView;
    private Button mSureButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mShowTextView = (TextView) this.findViewById(R.id.show_tv);
        mSureButton = (Button) this.findViewById(R.id.sure_btn);
        mSureButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //配置数据源
                final List list = new ArrayList();
                list.add("美女你好");
                list.add("帅哥你好");
                list.add("世界你好");
                //构造实例化选择弹窗
               SelectDialog chooseDialog = new SelectDialog.Builder(MainActivity.this)
                        .setDataList(list)
                        .setButtonColor(getResources().getColor(R.color.text_10))
                        .setButtonSize(14)
                        .setLastButtonSize(14)
                        .setTitleText("编辑选择")
                        .build();
                //对选择弹窗item点击事件监听
                chooseDialog.setButtonListener(new BaseNoticeWindow.OnButtonListener() {
                    @Override
                    public void onSureListener(View v) {
                        mShowTextView.setText(list.get((Integer) v.getTag()));
                    }
                    @Override
                    public void onDiscardListener(View v) {

                    }
                    @Override
                    public void onDismissListener(View v, int nType) {

                    }
                });
                chooseDialog.show(mShowTextView);

            }
        });

    }
}

4.重头戏,选择弹窗SelectDialog

package andrew.selectdialogdemo;

import android.app.Activity;
import android.content.Context;
import android.graphics.Color;
import android.text.TextUtils;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

/**
 * 选择弹框
 * Created by liuhongxia on 2016/05/30
 */

public class SelectDialog extends BaseNoticeWindow implements View.OnClickListener {


    private List mDataList = new ArrayList(0);

    private Context mContext;
    private String mTitleText = null;
    private int mTitleBackgroundColor = -1;
    private int mTitleTextColor = Color.WHITE;
    private int mButtonColor = -1;
    private int mTitleTextSize;
    private int mButtonSize;
    private int mLastButtonSize;

    private ArrayList buttonList = new ArrayList();



    public static class Builder {
        Context mContext;
        String mTitleText = null;
        int mTitleBackgroundColor = -1;
        int mTitleTextColor = Color.WHITE;
        int mButtonColor = -1;
        int mTitleTextSize = 18;
        int mButtonSize = 14;
        int mLastButtonSize = 17;
        List mDataList;


        public Builder(Context context) {

            mContext = context;
        }

        public SelectDialog build() {

            return new SelectDialog(this);
        }

        public Builder setTitleText(String title) {

            if (TextUtils.isEmpty(title)) {

                return null;
            }

            mTitleText = title;
            return this;
        }

        public Builder setTitleBackground(int colorResId){
            mTitleBackgroundColor = colorResId;
            return this;
        }

        public Builder setTitleTextColor(int colorResId){
            mTitleTextColor = colorResId;
            return this;
        }
        public Builder setTitleTextSize(int textSize){
            mTitleTextSize = textSize;
            return this;
        }

        public Builder setButtonColor(int buttonColor) {

            mButtonColor = buttonColor;
            return this;
        }

        public Builder setButtonSize(int buttonSize) {

            mButtonSize = buttonSize;
            return this;
        }


        public Builder setLastButtonSize(int buttonSize) {

            mLastButtonSize = buttonSize;
            return this;
        }

        public Builder setDataList(List list) {
            mDataList = list;
            return this;
        }
    }

    public SelectDialog(Builder builder) {
        mContext = builder.mContext;
        mTitleText = builder.mTitleText;
        mTitleBackgroundColor = builder.mTitleBackgroundColor;
        mTitleTextColor = builder.mTitleTextColor;
        mButtonColor = builder.mButtonColor;
        mDataList = builder.mDataList;
        mTitleTextSize = builder.mTitleTextSize;
        mButtonSize = builder.mButtonSize;
        mLastButtonSize = builder.mLastButtonSize;
        init();
    }

    private void init(){

        if (null == mDataList) {
            return;
        }
        //头部标题TextView
        LayoutParams titleParams = new LayoutParams(
                LayoutParams.MATCH_PARENT, ConvertUtils.dip2px(mContext, 44));
        TextView titleTextView = new TextView(mContext);
        titleTextView.setLayoutParams(titleParams);
        titleTextView.setBackgroundColor(mContext.getResources().getColor(R.color.topbar));
        titleTextView.setTextColor(mTitleTextColor);
        titleTextView.setText(mTitleText);
        titleTextView.setTextSize(mTitleTextSize);
        titleTextView.setGravity(Gravity.CENTER);

        //用于添加button和textview的layout
        LinearLayout layout = new LinearLayout(mContext);
        LayoutParams layoutParams = new LayoutParams(
                LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT);
        layoutParams.leftMargin = ConvertUtils.dip2px(mContext, 50);
        layoutParams.rightMargin = ConvertUtils.dip2px(mContext, 50);
        layout.setLayoutParams(layoutParams);
        layout.setGravity(Gravity.CENTER);
        layout.setOrientation(LinearLayout.VERTICAL);
        layout.setBackgroundColor(mContext.getResources().getColor(R.color.white));
        layout.addView(titleTextView);


        //button的属性
        LayoutParams btnParams = new LayoutParams(
                LayoutParams.MATCH_PARENT, ConvertUtils.dip2px(mContext,44));
        btnParams.leftMargin = ConvertUtils.dip2px(mContext, 15);
        btnParams.rightMargin = ConvertUtils.dip2px(mContext, 15);

        //主Layout
        LinearLayout mainLayout = new LinearLayout(mContext);
        LayoutParams mainLayoutParams =new LayoutParams(
                LayoutParams.MATCH_PARENT,  mContext.getResources().getDisplayMetrics().heightPixels);
        mainLayout.setLayoutParams(mainLayoutParams);
        mainLayout.setGravity(Gravity.CENTER);
        mainLayout.setOrientation(LinearLayout.VERTICAL);
        mainLayout.setBackgroundColor(mContext.getResources().getColor(R.color.alpha50));



        //textView的属性
        LayoutParams textParams = new LayoutParams(
                LayoutParams.MATCH_PARENT, ConvertUtils.dip2px(mContext,1));
        textParams.leftMargin = ConvertUtils.dip2px(mContext, 15);
        textParams.rightMargin = ConvertUtils.dip2px(mContext, 15);

        int size = mDataList.size();
        for (int i = 0; i < size + 1; i++) {
            Button tDiscardBtn = new Button(mContext);
            buttonList.add(tDiscardBtn);
            tDiscardBtn.setLayoutParams(btnParams);
            tDiscardBtn.setGravity(Gravity.CENTER);
            if (i == size) {
                tDiscardBtn.setText("取消");
                tDiscardBtn.setTextSize(mLastButtonSize);
                tDiscardBtn.setBackgroundColor(mContext.getResources().getColor(R.color.white));
                tDiscardBtn.setTextColor(mContext.getResources().getColor(R.color.topbar));
            } else {
                tDiscardBtn.setText(mDataList.get(i));
                tDiscardBtn.setTextSize(mButtonSize);
                tDiscardBtn.setBackgroundColor(mContext.getResources().getColor(R.color.white));
                tDiscardBtn.setTextColor(mButtonColor);

                tDiscardBtn.setTag(i);
            }
            tDiscardBtn.setOnClickListener(this);
            tDiscardBtn.setGravity(Gravity.CENTER);
            TextView textView = new TextView(mContext);
            textView.setBackgroundColor(mContext.getResources().getColor(R.color.line));
            textView.setLayoutParams(textParams);

            layout.addView(tDiscardBtn);
            //去掉最后一行的线
            if (i != size) {
                layout.addView(textView);
            }
        }
        mainLayout.addView(layout);
        //设置按钮的属性
//        setAllButtonStyle();
        this.setContentView(mainLayout);
        this.setWidth(mContext.getResources().getDisplayMetrics().widthPixels);
        this.setHeight(mContext.getResources().getDisplayMetrics().heightPixels);
//        this.setAnimationStyle(R.style.menu_dialog_animation);
        this.setOutsideTouchable(true);
        mainLayout.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {

                Dismiss(view, BaseNoticeWindow.TYPE_DISMISS_NORMAL);
            }
        });
    }

    public void show(View parent) {
        if (!((Activity) mContext).isFinishing()) {
            this.showAtLocation(parent, Gravity.CENTER, 0, 0);
        }
    }

    public void setAllButtonTextColor(int colorId) {
        for (Button button : buttonList) {
            button.setTextColor(colorId);
        }
    }

    /**
     * 设置button的样式
     */
    public void setAllButtonStyle() {
        for (Button button : buttonList) {
            button.setTextSize(14);
            button.setBackgroundColor(mContext.getResources().getColor(R.color.white));
            button.setTextColor(mContext.getResources().getColor(R.color.text_10));
        }
    }

    @Override
    public void onClick(View v) {

        if (mListener == null) {
            dismiss();
            return;
        }

        if (v.getTag() != null) {
            mListener.onSureListener(v);
        } else {
            mListener.onDiscardListener(v);
        }

        Dismiss(v, BaseNoticeWindow.TYPE_DISMISS_BUTTON);
    }

    private void Dismiss(View v, int nType) {

        if (null != mListener) {

            mListener.onDismissListener(v, nType);
        }

        dismiss();
    }
}

5.总结

对于在代码里面写view，可能有些新手会觉得看上去有点吃力，最简单直接的方法就是，把代码里的view弄成xml布局，这样就会更加方便直接。

转载请注明转自：http://blog.csdn.net/u011176685/article/details/51546404

简书博客：http://www.jianshu.com/p/874a8736cbd0

demo下载地址：http://download.csdn.net/detail/u011176685/9536658