Android 对话框通知(Dialog Notification)

最新推荐文章于 2021-03-23 10:08:51 发布

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#android #对话框

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本文详细介绍了在Android应用中如何实现确定取消、pick选择、单选和多选对话框的功能，包括创建对话框、设置参数、响应点击事件等关键步骤。

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package cn.itcast.dialog;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.text.AlteredCharSequence;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class DemoActivity extends Activity implements OnClickListener {

	private Button bt1, bt2, bt3, bt4, bt5;
	AlertDialog dialog3;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		bt1 = (Button) this.findViewById(R.id.button1);
		bt1.setOnClickListener(this);
		bt2 = (Button) this.findViewById(R.id.button2);
		bt2.setOnClickListener(this);
		bt3 = (Button) this.findViewById(R.id.button3);
		bt3.setOnClickListener(this);
		bt4 = (Button) this.findViewById(R.id.button4);
		bt4.setOnClickListener(this);
		bt5 = (Button) this.findViewById(R.id.button5);
		bt5.setOnClickListener(this);
	}

	public void onClick(View v) {
		switch (v.getId()) {
		case R.id.button1: // 确定取消的对话框
			// 1.获取一个对话框的创建器
			AlertDialog.Builder builder = new Builder(DemoActivity.this);
			// 2.所有builder设置一些参数
			builder.setTitle("对话框标题");
			builder.setMessage("提示 是否退出呀?");
			builder.setPositiveButton("确定",
					new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int which) {
							Toast.makeText(getApplicationContext(), "确定被点击", 0)
									.show();
						}
					});

			builder.setNegativeButton("取消",
					new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int which) {
							Toast.makeText(getApplicationContext(), "取消被点击", 0)
									.show();
						}
					});
			AlertDialog dialog = builder.create();
			dialog.show();
			break;
		case R.id.button2: // pick的对话框
			// 1.获取一个对话框的创建器
			AlertDialog.Builder builder2 = new Builder(DemoActivity.this);
			builder2.setTitle("pick 一个人");
			final String[] arr = new String[] { "张三", "李四", "王五" };
			builder2.setItems(arr, new DialogInterface.OnClickListener() {
				public void onClick(DialogInterface dialog, int which) {
					Toast.makeText(getApplicationContext(), arr[which], 0)
							.show();
				}
			});
			builder2.create().show();
			break;
		case R.id.button3: // 带选择 按钮的单选对话框
			// 1.获取一个对话框的创建器
			AlertDialog.Builder builder3 = new Builder(DemoActivity.this);
			builder3.setTitle("选择一个颜色");
			final String[] items = new String[] { "红色", "蓝色", "黄色" };
			builder3.setSingleChoiceItems(items, 1,
					new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int which) {
							Toast.makeText(getApplicationContext(),
									items[which], 0).show();
							dialog3.dismiss();
						}
					});
			dialog3 = builder3.create();
			dialog3.show();
			break;
		case R.id.button4: // 带选择多个 按钮的多选对话框
			// 1.获取一个对话框的创建器
			AlertDialog.Builder builder4 = new Builder(DemoActivity.this);
			builder4.setTitle("选择若干个颜色");
			final String[] items4 = new String[] { "红色", "蓝色", "黄色" };
			builder4.setMultiChoiceItems(items4, new boolean[] { false, false,
					false }, new DialogInterface.OnMultiChoiceClickListener() {
				public void onClick(DialogInterface dialog, int which,
						boolean isChecked) {
					Toast.makeText(getApplicationContext(),
							items4[which] + " 选择状态" + isChecked, 0).show();
				}
			});
			builder4.setPositiveButton("确定",
					new DialogInterface.OnClickListener() {
						public void onClick(DialogInterface dialog, int which) {
			
						}
					});
			dialog3 = builder4.create();
			dialog3.show();
			break;

		case R.id.button5: // 进度条对话框
			ProgressDialog pd = new ProgressDialog(this);
			pd.setTitle("提示");
			pd.setMessage("正在获取数据");
			pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
			pd.setMax(100);
			pd.show();
			pd.setProgress(50);
			break;
		}
	}

	@Override
	protected void onPause() {
		System.out.println("onpause");
		super.onPause();
	}
}