Android开发——通知

谁借莪１个温暖的怀抱￠ 2024-03-22 10:07 55阅读 0赞

> **弹出式对话框**

**activity\_main.xml**

![ca442adc9136497185c8c803dfc4b586.png][]

**MianActivity.java**

package com.example.notification;
    
    import androidx.appcompat.app.AlertDialog;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.content.DialogInterface;
    import android.os.Bundle;
    import android.view.TouchDelegate;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;
    
    // TODO 通知
    // TODO 1、弹出式对话框
    public class MainActivity extends AppCompatActivity {
        Button btn_1;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            btn_1=findViewById(R.id.btn_1);
            btn_1.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    //1、创建对话框的构建器(方框)
                    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                    //2、设置弹出框
                    builder.setTitle("版本更新");
                    builder.setMessage("检查到新版本，是否立即更新");
                    // TODO 积极的操作（确定）
                    builder.setPositiveButton("立即升级", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, "立即升级", Toast.LENGTH_SHORT).show();
                        }
                    });
                    // TODO 消极的操作（取消）
                    builder.setNegativeButton("下次再说", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, "下次再说", Toast.LENGTH_SHORT).show();
                        }
                    });
                    //3、显示对话框
                    builder.show();
                }
            });
        }
    }

**运行效果：**

![f3193f68469048fb99845fbbffba994b.png][]

>  **弹出式对话框**

**activity\_main.xml**

**UI效果 ：**

![9a57c3f3d79746279aec533e27670cc1.png][]

**MainActivity.java**

package com.example.notification;
    
    import androidx.appcompat.app.AlertDialog;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.content.DialogInterface;
    import android.os.Bundle;
    import android.view.TouchDelegate;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;
    
    // TODO 通知
    public class MainActivity extends AppCompatActivity {
        Button btn_2;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            btn_2=findViewById(R.id.btn_2);
          
            // TODO 2、弹出框
            btn_2.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                    builder.setTitle("更多");
                    String[] data = {"上一首","下一首","暂停播放","分享","收藏"};
                    builder.setItems(data, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, data[i], Toast.LENGTH_SHORT).show();
                        }
                    });
                    builder.show();
                }
            });
        }
    }

**运行效果：**

![9aaf794e036244fe854d025b104d054e.png][]

>  **进度条弹出框**

// TODO 3、进度弹出对话框
            btn_3.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    ProgressDialog dialog =new ProgressDialog(MainActivity.this);
                    dialog.setTitle("正在加载");
                    dialog.setMessage("正在加载中，请稍后.....");
                    dialog.show();
                }
            });

**运行效果：**

**![ccd43177d327497cbc3c1b69af99230d.png][]**

> **模拟加载状态**

**1、转圈样式进度**

**运行效果：**

![c2265bcc16fe424ebca96c486c5b59ed.png][]

**2、百分比样式进度**

// TODO 4、模拟下载过程
            btn_4.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    ProgressDialog dialog = new ProgressDialog(MainActivity.this);
                    dialog.setTitle("下载");
                    // TODO 设置进度条的样式
                    //转圈进度样式
    //                dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                    //百分比进度样式（0%--------100%）
                    dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                    dialog.show();
    
                    // TODO 创建子线程用于更新当前进度
                    new Thread(){
                        @Override
                        public void run() {
                            for (int i=1; i<=100; i++){
                                dialog.setProgress(i);
                                try {
                                    Thread.sleep(100);
                                }catch (InterruptedException e){
                                    throw new RuntimeException(e);
                                }
                            }
                            //关闭弹出框
                            dialog.dismiss();
                        }
                    }.start();
                }
            });

**运行效果：**

**![39f77011ff40406fb017bddb5105d0cf.png][]**

>  **自定义对话框**

**1、在layout文件夹中创建自定义布局页面文件**

右键 layout -> new -> Layout Resource File

![b531c183187149d3b4e17395e8b56bf9.png][]

**2、编写mylogin.xml文件**

<?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="300sp"
        android:layout_height="160sp"
        android:orientation="vertical"
        android:padding="10sp"
        android:gravity="center">
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/et_username"
            android:hint="请输入账号"/>
        <EditText
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@+id/et_pwd"
            android:hint="请输入密码"/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/btn_login"
            android:text="登录"/>
    
    </LinearLayout>

![edcd08b05f5d4b8ba571c2d89879607d.png][]

**3、编写Java代码**

// TODO 5、自定义样式弹出框
            btn_5.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    //创建弹出框
                    Dialog dialog=new Dialog(MainActivity.this);
                    dialog.setTitle("登录");
                    //设置自定义的布局页面mylogin.xml文件加载到对话框里
                    dialog.setContentView(R.layout.mylogin);
                    dialog.show();
                }
            });

**运行效果：**

**![97050ca4b07c4f1dadbb73892981526d.png][]**

![c099ed740e4e40e4bb7a8dee352d0d01.png][]

> **完整代码**

**配置文件**

**Activity\_main.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"
        android:gravity="center">
    
        <Button
            android:id="@+id/btn_1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="升级" />
        <Button
            android:id="@+id/btn_2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="更多" />
        <Button
            android:id="@+id/btn_3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="加载" />
        <Button
            android:id="@+id/btn_4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="下载" />
        <Button
            android:id="@+id/btn_5"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="登录" />
    </LinearLayout>

**Java代码**

package com.example.notification;
    
    import androidx.appcompat.app.AlertDialog;
    import androidx.appcompat.app.AppCompatActivity;
    
    import android.app.Dialog;
    import android.app.ProgressDialog;
    import android.content.DialogInterface;
    import android.os.Bundle;
    import android.view.TouchDelegate;
    import android.view.View;
    import android.widget.Button;
    import android.widget.Toast;
    
    // TODO 通知
    public class MainActivity extends AppCompatActivity {
        Button btn_1;
        Button btn_2;
        Button btn_3;
        Button btn_4;
        Button btn_5;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            btn_1=findViewById(R.id.btn_1);
            btn_2=findViewById(R.id.btn_2);
            btn_3=findViewById(R.id.btn_3);
            btn_4=findViewById(R.id.btn_4);
            btn_5=findViewById(R.id.btn_5);
            // TODO 1、弹出式对话框
            btn_1.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    //1、创建对话框的构建器(方框)
                    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                    //2、设置弹出框
                    builder.setTitle("版本更新");
                    builder.setMessage("检查到新版本，是否立即更新");
                    // TODO 积极的操作（确定）
                    builder.setPositiveButton("立即升级", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, "立即升级", Toast.LENGTH_SHORT).show();
                        }
                    });
                    // TODO 消极的操作（取消）
                    builder.setNegativeButton("下次再说", new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, "下次再说", Toast.LENGTH_SHORT).show();
                        }
                    });
                    //3、显示对话框
                    builder.show();
                }
            });
            // TODO 2、弹出对话框
            btn_2.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    AlertDialog.Builder builder=new AlertDialog.Builder(MainActivity.this);
                    builder.setTitle("更多");
                    String[] data = {"上一首","下一首","暂停播放","分享","收藏"};
                    builder.setItems(data, new DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface dialogInterface, int i) {
                            Toast.makeText(MainActivity.this, data[i], Toast.LENGTH_SHORT).show();
                        }
                    });
                    builder.show();
                }
            });
            // TODO 3、进度弹出对话框
            btn_3.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    ProgressDialog dialog =new ProgressDialog(MainActivity.this);
                    dialog.setTitle("正在加载");
                    dialog.setMessage("正在加载中，请稍后.....");
                    dialog.show();
                }
            });
            // TODO 4、模拟下载过程
            btn_4.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    ProgressDialog dialog = new ProgressDialog(MainActivity.this);
                    dialog.setTitle("下载");
                    // TODO 设置进度条的样式
                    //转圈进度样式
    //                dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
                    //百分比进度样式（0%--------100%）
                    dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
                    dialog.show();
    
                    // TODO 创建子线程用于更新当前进度
                    new Thread(){
                        @Override
                        public void run() {
                            for (int i=1; i<=100; i++){
                                dialog.setProgress(i);
                                try {
                                    Thread.sleep(100);
                                }catch (InterruptedException e){
                                    throw new RuntimeException(e);
                                }
                            }
                            //关闭弹出框
                            dialog.dismiss();
                        }
                    }.start();
                }
            });
            // TODO 5、自定义样式弹出框
            btn_5.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    //创建弹出框
                    Dialog dialog=new Dialog(MainActivity.this);
                    dialog.setTitle("登录");
                    //设置自定义的布局页面mylogin.xml文件加载到对话框里
                    dialog.setContentView(R.layout.mylogin);
                    dialog.show();
                }
            });
    
        }
    }

**运行UI效果：**

**![121cece52242479497cc682d0508ade6.png][]**

[ca442adc9136497185c8c803dfc4b586.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/3e2226e6d32942bdb40fe14bb13f7fea.png
[f3193f68469048fb99845fbbffba994b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/5f83bbea895e48e39ebba75d467953a6.png
[9a57c3f3d79746279aec533e27670cc1.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/5b937d8a9db34cbdaed2205d7ef6634e.png
[9aaf794e036244fe854d025b104d054e.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/6dbf9e59da1b47d0b6afdee6947db727.png
[ccd43177d327497cbc3c1b69af99230d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/2784dbc30daa4d1fb45084f5fa27435e.png
[c2265bcc16fe424ebca96c486c5b59ed.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/7012c92df337443586a2edb9339ecde7.png
[39f77011ff40406fb017bddb5105d0cf.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/5f17c148c1da4f929fc260e67b8f1315.png
[b531c183187149d3b4e17395e8b56bf9.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/062f7998d63b4407828b5195ec759929.png
[edcd08b05f5d4b8ba571c2d89879607d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/3e1112f4f40e4bc69a03ce9c69f4ba8a.png
[97050ca4b07c4f1dadbb73892981526d.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/3bcef4952e4b49149c6390f8ac858189.png
[c099ed740e4e40e4bb7a8dee352d0d01.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/56d078cc4e6d43ddbdb467e6503b7434.png
[121cece52242479497cc682d0508ade6.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/22/379a5226960747cdb1986cc0a68a9999.png