Android 开发使用PopupWindow实现弹出警告框的复用类示例

本文实例讲述了Android 开发使用PopupWindow实现弹出警告框的复用类。分享给大家供大家参考，具体如下：

Android开发中相信下图所示界面大家都不陌生，该种弹出框的使用频率也是极高的，所以我专门谢了个类用于方便的弹出该界面。并把确定或取消后的逻辑通过抽象方法的方式让用户自己实现，大大提高了开发效率。下面是该类：

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";

  
  public MyPopupWindow(Activity context) {
    this.context = context;
  }

  
  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();
      }
    });
  }

  
  public abstract void sureClick();

  
  public abstract void cancelClick();

  
  public void setContent(String content) {
    this.content = content;
  }

  
  public void setPositiveWord(String positiveWord) {
    this.positiveWord = positiveWord;
  }

  
  public void setNegativeWord(String negativeWord) {
    this.negativeWord = negativeWord;
  }

  
  public void dismiss() {
    popupWindow.dismiss();
  }
}

其中弹出框用到的布局popup.xml代码如下：

下面简单的使用一下：在界面放一个按钮，按钮点击后弹出警告框。代码如下：

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();
      }
    });
  }
}

即如下效果：

So，以后使用只需要简单调用几句代码就好了！

更多关于Android相关内容感兴趣的读者可查看本站专题：《Android控件用法总结》、《Android开发入门与进阶教程》、《Android视图View技巧总结》、《Android编程之activity操作技巧总结》、《Android数据库操作技巧总结》及《Android资源操作技巧汇总》

希望本文所述对大家Android程序设计有所帮助。