Android中各种常见弹出框的使用

1、下列代码是Android中各种常见弹出框使用的代码:

package com.example.android_02;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.content.DialogInterface;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

/**
 * 
 * @author daosui
 *	各种弹出框的使用
 */
public class MainActivity extends Activity implements OnClickListener {
	
	Button btn1,btn2,btn3,btn4,btn5,btn6,btn7;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        btn1 = (Button)this.findViewById(R.id.btn1);
        btn2 = (Button)this.findViewById(R.id.btn2);
        btn3 = (Button)this.findViewById(R.id.btn3);
        btn4 = (Button)this.findViewById(R.id.btn4);
        btn5 = (Button)this.findViewById(R.id.btn5);
        btn6 = (Button)this.findViewById(R.id.btn6);
        btn7 = (Button)this.findViewById(R.id.btn7);
        
        btn1.setOnClickListener(this);
        btn2.setOnClickListener(this);
        btn3.setOnClickListener(this);
        btn4.setOnClickListener(this);
        btn5.setOnClickListener(this);
        btn6.setOnClickListener(this);
        btn7.setOnClickListener(this);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

	public void onClick(View v) {
		if(v.getId() == R.id.btn1){//简单弹出框的使用
			new AlertDialog.Builder(this).setTitle("标题")//设置弹出框的第一种方法
			.setMessage("简单弹出框").setPositiveButton("确定", null)
			.show();		
		}else if(v.getId() == R.id.btn2){//带确定和取消按钮的弹出框的使用
			Builder builder = new AlertDialog.Builder(this);//设置弹出框的第二种方法
			builder.setTitle("确定");
			builder.setMessage("确定吗?");
			builder.setPositiveButton("是", null);
			builder.setNegativeButton("否", null);
			builder.show();
		}else if(v.getId() == R.id.btn3){//文本对话框的使用
			new AlertDialog.Builder(this)
			.setTitle("请输入 ")
			.setIcon(android.R.drawable.ic_dialog_info)
			.setView(new EditText(this))
			.setPositiveButton("确定", null)
			.setPositiveButton("取消", null)
			.show();
		}else if(v.getId() == R.id.btn4){//单选对话框的使用
			Builder builder = new AlertDialog.Builder(this);
			builder.setTitle("请选择");
			builder.setIcon(android.R.drawable.ic_dialog_info);
			builder.setSingleChoiceItems(new String[]{"选项1","选项2","选项3","选项4"}, 0, new DialogInterface.OnClickListener() {
				
				@Override
				public void onClick(DialogInterface v, int which) {
					v.dismiss();				
				}
			});		
			builder.setNegativeButton("取消", null);
			builder.show();
		}else if(v.getId() == R.id.btn5){//多选对话框的使用
			Builder builder = new AlertDialog.Builder(this);
			builder.setTitle("请选择");
			builder.setIcon(android.R.drawable.ic_dialog_info);
			builder.setMultiChoiceItems(new String[]{"选项1","选项2","选项3","选项4"}, null, null);
			builder.setPositiveButton("确定", null);
			builder.setNegativeButton("取消", null);
			builder.show();
		}else if(v.getId() == R.id.btn6){//列表弹出框的使用
			Builder builder = new AlertDialog.Builder(this);
			builder.setTitle("列表框");
			builder.setIcon(android.R.drawable.ic_dialog_info);
			builder.setItems(new String[]{"列表1","列表2","列表3","列表4"}, null);
			builder.setPositiveButton("确定", null);
			builder.show();
		}else if(v.getId() == R.id.btn7){//图片弹出框的使用
			ImageView img = new ImageView(this);
			img.setImageResource(R.drawable.ic_launcher);
			Builder builder = new AlertDialog.Builder(this);
			builder.setTitle("图片框");
			builder.setView(img);
			builder.setPositiveButton("确定",null);
			builder.show();
		}
		
	}
    
}

至于按钮部分，则需自己在activity_main.xml(注:xml文件命名是只能有小写字母存在)定义了，一切准备就绪后就可以看到在Android中各种经常出现的弹出框的使用过程了。