android 对话框的使用(入门级示例)

【实例截图】

【核心代码】

package com.example.lxp20181212_duihua;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
	Button btn1,btn2,btn3,btn4,btn5;
	AlertDialog.Builder builder1,builder2,builder3;
	ProgressDialog builder4;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		btn1 = (Button)findViewById(R.id.button1);
		btn2 = (Button)findViewById(R.id.button2);
		btn3 = (Button)findViewById(R.id.button3);
		btn4 = (Button)findViewById(R.id.button4);
		btn5 = (Button)findViewById(R.id.button5);
		btn1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				builder1 = new AlertDialog.Builder(MainActivity.this);
				builder1.setIcon(R.drawable.ic_launcher);
				builder1.setTitle("这是一个确认对话框");
				builder1.setPositiveButton("确定", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的确定按钮");
					}
				});
				builder1.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的取消按钮");
					}
				});
				builder1.show();
			}
		});
		btn2.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				builder2 = new AlertDialog.Builder(MainActivity.this);
				builder2.setIcon(R.drawable.ic_launcher);
				builder2.setTitle("这是一个详细实例对话框");
				builder2.setPositiveButton("确定", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的确定按钮");
					}
				});
				builder2.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的取消按钮");
					}
				});
				builder2.setNeutralButton("详细", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的详细按钮");
					}
				});
				builder2.show();
			}
		});
		btn3.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				builder3 = new AlertDialog.Builder(MainActivity.this);
				builder3.setIcon(R.drawable.ic_launcher);
			
				LayoutInflater inflater = LayoutInflater.from(getApplicationContext());
				final View textEntryView = inflater.inflate(R.layout.text_entry, null);
				builder3.setView(textEntryView);
				builder3.setPositiveButton("确定", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的确定按钮");
					}
				});
				builder3.setNegativeButton("取消", new DialogInterface.OnClickListener() {
					
					@Override
					public void onClick(DialogInterface arg0, int arg1) {
						// TODO 自动生成的方法存根
						setTitle("你点击了对话框上的取消按钮");
					}
				});
				builder3.show();
			}
		});
		btn4.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				builder4 = new ProgressDialog(MainActivity.this);
				builder4.setTitle("正在处理中");
				builder4.setMessage("等待.....");
				builder4.show();
			}
		});
		btn5.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View arg0) {
				// TODO 自动生成的方法存根
				Toast.makeText(getApplicationContext(), "这是一个Toast按钮", Toast.LENGTH_LONG).show();
			}
		});
	}

	@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;
	}

}