Android——对话框1（一般、选择、自定义、进度条）

xml

 <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出普通对话框"
        android:onClick="pt_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出单选对话框"
        android:onClick="danxuanonclick"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出多选对话框"
        android:onClick="duoxuanonclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义对话框"
        android:onClick="zdy_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义旋转进度条对话框"
        android:onClick="jdt_onclick"/>
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="点击触发弹出自定义水平进度条对话框"
        android:onClick="jdt1_onclick"/>

loginlayout.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/anniu2"
        android:scaleType="fitXY"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="用户名"
        android:id="@+id/et_username"/>
    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="密码"
        android:inputType="textPassword"
        android:id="@+id/et_password"/>

</LinearLayout>

 java

package com.example.chenshuai.test322;

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.ProgressDialog;
import android.app.TimePickerDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.SubMenu;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.SeekBar;
import android.widget.TimePicker;
import android.widget.Toast;

import java.util.Calendar;

/**
 * Created by chenshuai on 2016/3/30.
 */
public class UIActivity2 extends AppCompatActivity {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_ui2);

        Button bt_changan = (Button)findViewById(R.id.bt_changan);
        bt_changan.setOnCreateContextMenuListener(this);


        //进度条
        //final 生命周期为整个类
        final ProgressBar pb_1 = (ProgressBar)findViewById(R.id.pb_1);
        final ProgressBar pb_2 = (ProgressBar)findViewById(R.id.pb_2);

        SeekBar sb_1 = (SeekBar)findViewById(R.id.sbr_1);

        sb_1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {


                pb_2.setProgress(progress);
            }

            //开始拖动
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            //结束拖动
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

                pb_2.setProgress(seekBar.getProgress());
                if (seekBar.getProgress() == seekBar.getMax()) {
                    //设置不可见  GONE不占位置  invisible 占位置
                    pb_1.setVisibility(View.GONE);

                } else {
                    //可见
                    pb_1.setVisibility(View.VISIBLE);
                }


            }
        });
    }

    //菜单  上下文菜单
    @Override
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {

        menu.add(0, 1, 0, "添加");
        menu.add(0, 2, 1, "修改");
        menu.add(0, 3, 2, "删除");
        SubMenu m = menu.addSubMenu(0, 4, 3, "子菜单");
        m.add(0,4-1,0,"子菜单项一");
        m.add(0,4-2,1,"子菜单项二");
        m.add(0,4-3,2,"子菜单项三");
        m.add(0,4-4,3,"子菜单项四");


        super.onCreateContextMenu(menu, v, menuInfo);
    }


    @Override
    public boolean onContextItemSelected(MenuItem item) {

        switch (item.getItemId())
        {
            case 1:
                Toast.makeText(UIActivity2.this, "触发了添加功能", Toast.LENGTH_SHORT).show();
                break;
            case 2:
                Toast.makeText(UIActivity2.this, "触发了删除功能", Toast.LENGTH_SHORT).show();
                break;
            case 3:
                Toast.makeText(UIActivity2.this, "触发了修改功能", Toast.LENGTH_SHORT).show();
                break;

        }
        return super.onContextItemSelected(item);
    }

    @Override
    //重写  创建选项菜单的方法
    public boolean onCreateOptionsMenu(Menu menu) {

        //添加菜单项
        //第一种 纯编码方式
        /*menu.add(0, 1, 0, "添加");
        menu.add(0, 2, 2, "删除");
        menu.add(0, 3, 1, "修改");
*/
        //第二种  加载菜单文件方式

        //1.获取一个菜单加载器

        MenuInflater menuInflater = getMenuInflater();

        menuInflater.inflate(R.menu.mymenu,menu);


        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected (MenuItem item){

        //Toast.makeText(UiActivity2.this, "选中的菜单项是" + item.getTitle(), Toast.LENGTH_SHORT).show();

        //根据菜单项不同响应不同功能
        switch (item.getItemId()) {
            case 1:
                Toast.makeText(UIActivity2.this, "触发了添加功能", Toast.LENGTH_SHORT).show();
                break;
            case 2:
                Toast.makeText(UIActivity2.this, "触发了删除功能", Toast.LENGTH_SHORT).show();
                break;
            case 3:
                Toast.makeText(UIActivity2.this, "触发了修改功能", Toast.LENGTH_SHORT).show();
                break;
            case R.id.it1:
                Toast.makeText(UIActivity2.this, "触发了删除一功能", Toast.LENGTH_SHORT).show();
                break;
            case R.id.it2:
                Toast.makeText(UIActivity2.this, "触发了添加一功能", Toast.LENGTH_SHORT).show();
                break;
        }


        return super.onOptionsItemSelected(item);


    }

    public void pt_onclick(View view)
    {
        //普通对话框
        //对话框的构建器
        //AlertDialog.Builder ab = new AlertDialog.Builder(this);
       /* ab.setTitle("数据删除");
        ab.setMessage("你确定要删除吗？");
        //负面按钮
        ab.setPositiveButton("取消", null);
        //正面按钮
        ab.setNegativeButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {

                Toast.makeText(UIActivity2.this, "删除成功", Toast.LENGTH_SHORT).show();

            }
        });
        //显示
        ab.show();*/

        //方法链调用
        new AlertDialog.Builder(this)

                .setTitle("确认保存")
                .setMessage("确定要保存吗？")
                .setPositiveButton("确定", null)
                .setNegativeButton("取消", null)
                .show();
    }

    public void danxuanonclick(View v)
    {
        final String[] str_color = {"红","绿","蓝","灰"};
        new AlertDialog.Builder(this)
                .setTitle("请选择颜色")
                .setSingleChoiceItems(str_color, 0, new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        Toast.makeText(UIActivity2.this, "选中了" + str_color[which], Toast.LENGTH_SHORT).show();

                        //移除
                        //dialog.dismiss();
                    }
                })
                .setNeutralButton("确定", null)
                .show();

    }
    public void duoxuanonclick(View v)
    {
        final String[] str_color = {"红","绿","蓝","灰"};
        final boolean[] bl_sz = {true,true,true,false};
        new AlertDialog.Builder(this)
                .setTitle("请选择颜色")
                .setMultiChoiceItems(str_color, bl_sz, new DialogInterface.OnMultiChoiceClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which, boolean isChecked) {
                        if (isChecked) {
                            Toast.makeText(UIActivity2.this, str_color[which] + "选中了", Toast.LENGTH_SHORT).show();
                        } else {
                            Toast.makeText(UIActivity2.this, str_color[which] + "取消选中了", Toast.LENGTH_SHORT).show();
                        }

                    }
                })
                .setNeutralButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                        //遍历数组
                        for (boolean b : bl_sz) {

                            try {
                                Thread.sleep(100);
                            } catch (Exception ex) {

                            }
                            Toast.makeText(UIActivity2.this, "值=" + b, Toast.LENGTH_SHORT).show();

                        }
                    }
                })
                .show();
    }

    public void zdy_onclick(View view)
    {
       //1.获取加载器
        LayoutInflater layoutInflater = getLayoutInflater();
        //2.用加载器加载文件
        //final View v_1 = layoutInflater.inflate(R.layout.loginlayout,null);


        new AlertDialog.Builder(this)

                //.setView(v_1)
                .setView(R.layout.loginlayout)
                .setNegativeButton("取消", null)
                .setPositiveButton("登陆", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {

                       AlertDialog al = (AlertDialog) dialog;


                        //处理数据
                        //EditText et_username = (EditText)v_1.findViewById(R.id.et_username);

                       EditText et_username = (EditText) al.findViewById(R.id.et_username);

                        //Toast.makeText(UIActivity2.this, "用户名="+et_username.getText(), Toast.LENGTH_SHORT).show();

                        String useneme = et_username.getText().toString();

                        EditText et_password = (EditText) al.findViewById(R.id.et_password);
                        String pwd = et_password.getText().toString();

                        if (useneme.equals("wukong") && pwd.equals("123")) {

                            Intent in = new Intent(UIActivity2.this, Activity1.class);

                            startActivity(in);
                        } else
                            Toast.makeText(UIActivity2.this, "用户名" + useneme + "密码" + pwd, Toast.LENGTH_SHORT).show();
                        {

                        }

                    }
                })
                .show();

    }

    //旋转进度条
    public void jdt_onclick(View view)
    {

        final ProgressDialog pd = new ProgressDialog(this);
        pd.setMessage("正在加载请稍后");
        pd.show();

        //创建thread实例  =【重写run方法  启动多线程
        new Thread()
        {
            @Override
            public void run() {
                super.run();
                try
                {
                    Thread.sleep(3000);
                }
                catch (Exception e)
                {

                }

                pd.dismiss();//关闭

            }
        }.start();

    }
    //水平进度条
    public void jdt1_onclick(View view)
    {

        final ProgressDialog pd = new ProgressDialog(this);
        pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        pd.setMessage("正在加载请稍后");
        pd.show();

        //创建thread实例  实现Runable接口  启动多线程
        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 0; i <= pd.getMax(); i++) {
                    try {
                        Thread.sleep(100);
                    } catch (Exception e) {

                    }

                    pd.setProgress(i);
                }

                pd.dismiss();
            }
        }).start();

        //创建thread实例  重写run方法  启动多线程
        new Thread()
        {
            @Override
            public void run() {
                super.run();

                //新线程 子线程
                for (int i = 0; i <= pd.getMax(); i++) {
                    try {
                        Thread.sleep(100);
                    } catch (Exception e) {

                    }

                    pd.setProgress(i);
                  }

                 pd.dismiss();//关闭
                //子线程不能直接操作主线程 UI线程
                //1.可以用hander
                //2.也可以用runOnUiThread
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        Toast.makeText(UIActivity2.this, "加载完成", Toast.LENGTH_SHORT).show();
                    }
                });

            }

            }.start();

    }
}