Android开发使用PopupWindow实现弹出警告框的复用类示例

package com.***.popupwindow;

import ******;

public abstract class MyPopupWindow {

  private PopupWindow popupWindow;
  private Activity context;
  private String content;
  private String positiveWord = "确定";
  private String negativeWord = "取消";

  /**
   * 构造函数
   *
   * @param context
   */
  public MyPopupWindow(Activity context) {
    this.cOntext= context;
  }

  /**
   * 显示警示框
   */
  public void show() {
    View popView = View.inflate(context, R.layout.popup, null);
    popupWindow = new PopupWindow(context);
    popupWindow.setHeight(400);
    popupWindow.setWidth(700);
    popupWindow.setOutsideTouchable(true);
    popupWindow.setFocusable(true);
    popupWindow.setContentView(popView);
    popupWindow.showAtLocation(context.getWindow().getDecorView(), Gravity.CENTER, 0, 0);

    TextView tv_pop_text = (TextView) popView.findViewById(R.id.tv_pop_text);
    tv_pop_text.setText(content);

    Button bt_pop_sure = (Button) popView.findViewById(R.id.bt_pop_sure);
    bt_pop_sure.setText(positiveWord);
    bt_pop_sure.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        sureClick();
      }
    });

    Button bt_pop_cancel = (Button) popView.findViewById(R.id.bt_pop_cancel);
    bt_pop_cancel.setText(negativeWord);
    bt_pop_cancel.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        cancelClick();
      }
    });
  }

  /**
   * 确定键按下后执行
   */
  public abstract void sureClick();

  /**
   * 取消键按下后执行
   */
  public abstract void cancelClick();

  /**
   * 为警示设置警示内容
   *
   * @param content
   */
  public void setContent(String content) {
    this.cOntent= content;
  }

  /**
   * 设置确定键文字
   *
   * @param positiveWord
   */
  public void setPositiveWord(String positiveWord) {
    this.positiveWord = positiveWord;
  }

  /**
   * 设置取消键文字
   *
   * @param negativeWord
   */
  public void setNegativeWord(String negativeWord) {
    this.negativeWord = negativeWord;
  }

  /**
   * 手动取消警示框
   */
  public void dismiss() {
    popupWindow.dismiss();
  }
}

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>


  

  

  

    

    

    
  

package com.toprs.popupwindow;

import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.SeekBar;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

  private PopupWindow popupWindow;

  private Button button;

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

    button = (Button) findViewById(R.id.button);
    button.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        MyPopupWindow myPopupWindow = new MyPopupWindow(MainActivity.this) {

          @Override
          public void sureClick() {
            Toast.makeText(MainActivity.this, "确定", Toast.LENGTH_SHORT).show();
          }

          @Override
          public void cancelClick() {
            Toast.makeText(MainActivity.this, "取消", Toast.LENGTH_SHORT).show();
          }
        };
        myPopupWindow.setContent("确定退出？");
        myPopupWindow.show();
      }
    });
  }
}