黑马Android76期学习笔记01基础--day07--广播，有、无序广播、特殊广播接受者、样式和主题，this与context的区别、普通对话框，进度条对话框、帧动画

1.广播Broadcastreceiver

1、定义一个广播接收者（定义一个类并继承BroadcastReceiver）

public class OutGoingCallReveiver extends BroadcastReceiver

2、在清单文件里面进行配置

 <receiver android:name=".OutGoingCallReveiver">
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
            </intent-filter>
 </receiver>

案例
1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex059">
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".OutGoingCallReveiver">
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

2、自定义一个广播处理类，继承自BroadcastReceiver

package com.fengray.ex059;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.util.Log;

public class OutGoingCallReveiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//获得sharePerference中ip号码，在config.xml中存储,因为广播没有上下文，所以这边通过参数传递过来一个上下文
SharedPreferences sharedPreferences= context.getSharedPreferences(“config”,0);
String ipnumber=sharedPreferences.getString(“ipnumber”,"");
//获取当前拨打的电话号码
String currentNumber=getResultData();
//判断当前的号码是否是长途
if (currentNumber.startsWith(“0”)){
//在当前的号码前加上17951
setResultData(ipnumber+currentNumber);
}
}
}
3、MainActivity类

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private EditText edphoneNumber;
    private Button btnsave;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        edphoneNumber=findViewById(R.id.edphoneNumber);
    }
    //
    public void btnClick(View view){
        //获取号码
        String ipNumber=edphoneNumber.getText().toString().trim();
        //把当前ipNumber存起来，存在sp就行（sharePreference），sp实际是以config.xml的文件形式存储
        SharedPreferences sharedPreferences = getSharedPreferences("config",0);
        //获取sharepreferencs编辑器
        sharedPreferences.edit().putString("ipnumber",ipNumber).commit();
        //保存成功
        Toast.makeText(getApplicationContext(), "保存成功", Toast.LENGTH_SHORT).show();

    }
}

2.SD卡状态监听

• 1、定义广播接受者

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;

public class sdCardStateReceiver extends BroadcastReceiver {
    //当sd卡状态改变的时候
    @Override
    public void onReceive(Context context, Intent intent) {
        String action=intent.getAction();
        if ("android.intent.action.MEDIA_MOUNTED".equals(action)){
            Log.d("TAG", "sd card is mounted ");
        }else if ("android.intent.action.MEDIA_UNMOUNTED".equals(action)){
            Log.d("TAG", "sd card is UNmounted ");

        }

    }
}

• 2、在清单文件里面配置

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex060">
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".sdCardStateReceiver">
            <intent-filter>
                <action android:name="android.intent.action.MEDIA_MOUNTED"/>
                <action android:name="android.intent.action.MEDIA_UNMOUNTED"/>
                <data android:scheme="file"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

3.短信状态监听

1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex060">
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name=".sdCardStateReceiver">
            <intent-filter>
                <action android:name="android.intent.action.MEDIA_MOUNTED"/>
                <action android:name="android.intent.action.MEDIA_UNMOUNTED"/>
                <data android:scheme="file"/>
            </intent-filter>
        </receiver>
        <receiver android:name=".SmsListener">
            <intent-filter>
                <action android:name="android.provier.Telephony.SMS_RECEIVED"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

2、自定义SmsListenerReceiver继承自BroadcastReceiver
public class SmsListenerReceiver extends BroadcastReceiver {
//当sd卡状态改变的时候
@Override
public void onReceive(Context context, Intent intent) {
//获得key值为pdus的所有短信
Object[] messages =(Object[])intent.getExtras().get(“pdus”);
for (Object message:messages) {
//获取Message的实例
SmsMessage smsMessage=SmsMessage.createFromPdu((byte[]) message);
//获取发送短信的内容
String messageBody=smsMessage.getMessageBody();
String address= smsMessage.getOriginatingAddress();

        Log.d("TAG", "body: "+messageBody+"from"+address);
    }
}

}

4.卸载安装监听

1、清单文件

<receiver android:name=".AppStateReceiver">
            <intent-filter>
                <action android:name="android.intent.action.PACKAGE_INSTALL"/>
                <action android:name="android.intent.action.PACKAGE_REMOVED"/>
                <action android:name="android.intent.action.PACKAGE_ADDED"/>
                <data android:scheme="package"/>
            </intent-filter>

        </receiver>

2、AppStateReceiver 类文件

public class AppStateReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//获取当前广播的时间类型
String action=intent.getAction();
if (“android.intent.action.PACKAGE_INSTALL”.equals(action)){
Log.d(“TAG”, “应用安装了1111”);
}else if (“android.intent.action.PACKAGE_ADDED”.equals(action)){
Log.d(“TAG”, “应用安装了2222”);
}else if (“android.intent.action.PACKAGE_REMOVED”.equals(action)){
Log.d(“TAG”, “应用卸载了333”+intent.getData());

    }
}

}

5.重启手机是启动指定页面

1、清单文件

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex060">
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

2、BootReceiver 类

public class BootReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //在这个方法里面开启activity
        Intent newIntent=new Intent(context,MainActivity.class);
        //不能再广播接受者当中直接开启activity，需要添加一个标记，添加一个任务栈的标记
        newIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        //在广播中开启activity
        context.startActivity(newIntent);
    }
}

6.无序广播

本例并没有实现，应该是高版本对广播权限有限制
1、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex060">
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <receiver android:name="com.fengray.ex060.CustromReceiver">
            <intent-filter>
                <action android:name="com.fengray.CunstomerAction"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

**2、自定义广播类文件CustromReceiver **

package com.fengray.ex060;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import android.widget.Toast;

public class CustromReceiver extends BroadcastReceiver {
    //当接受到自定义广播
    @Override
    public void onReceive(Context context, Intent intent) {
        Log.d("TAG", "onReceive: -------");
        String content=intent.getStringExtra("name");
        Log.d("TAG", "onReceive: "+content);
        Toast.makeText(context, content, Toast.LENGTH_SHORT).show();

    }
}

**3、MainActivity **

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    //点击按钮发送一条无序广播
    public void sendBroadcast(View view){
        Intent intent=new Intent();
        intent.setAction("com.fengray.CunstomerAction");
        intent.putExtra("name","新闻联播每天晚上7点准时开播");
        sendBroadcast(intent);
    }

}

7.有序广播

有序广播

• 有序广播可以被终止
• 有序广播的数据可以被修改

无序广播

• 无序广播不可被终止
• 数据不可以被修改

需要在两个APP之间进行
ex061项目–广播发送者
项目结构

1、MainActivity

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

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

    //点击按钮发送有序广播
    public void sendBroadcast(View view){
        Intent intent=new Intent();
        //intent.putExtra();
        intent.setAction("com.fengray.sender");
        //发送有序广播
        //receiverPermission：接受的权限
        //resualtReceiver：最终的receiver
        //scheduler：是一个handler
        //initialCode：初始码
        //initialData：初始化数据
        sendOrderedBroadcast(intent,null,new FinalReceiver(),null,1,"我是广播的内容", null );
    }
}

2、FinalReceiver

public class FinalReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播所携带的数据
        String content=getResultData();
        //将广播数据显示出来
        Toast.makeText(context, "这是最终的广播接受者"+content, Toast.LENGTH_SHORT).show();
    }
}

ex062项目–广播接受者
目录结构分了四级有序接受

1、ProvinceReceiver

public class ProvinceReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播所携带的数据
        String content=getResultData();
        
        //终止广播，后续级别都无法再接收到广播
        //abortBroadcast();
        
        //将广播数据显示出来
        Toast.makeText(context, "省级"+content, Toast.LENGTH_SHORT).show();

        //修改广播数据
        setResultData("被省一级修改后的数据");

    }
}

**2、CityReceiver **

public class CityReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播所携带的数据
        String content=getResultData();
        //将广播数据显示出来
        Toast.makeText(context, "市级"+content, Toast.LENGTH_SHORT).show();

        //修改广播数据
        setResultData("被市一级修改后的数据");
    }
}

**3、XianReceiver **

public class XianReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播所携带的数据
        String content=getResultData();
        //将广播数据显示出来
        Toast.makeText(context, "县级"+content, Toast.LENGTH_SHORT).show();

        //修改广播数据
        setResultData("被县一级修改后的数据");
    }
}

**4、PersonReceiver **

public class PersonReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取广播所携带的数据
        String content=getResultData();
        //将广播数据显示出来
        Toast.makeText(context, "个人"+content, Toast.LENGTH_SHORT).show();
    }
}

5、清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fengray.ex062receiver">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <!--配置省级receiver，优先级最高，priority值越大，优先级越高-->
        <receiver android:name=".ProvinceReceiver">
            <intent-filter android:priority="1000">
                <action android:name="com.fengray.sender"/>
            </intent-filter>
        </receiver>
        <!--配置市级receiver，优先级最高，priority值越大，优先级越高-->
        <receiver android:name=".CityReceiver">
            <intent-filter android:priority="800">
                <action android:name="com.fengray.sender"/>
            </intent-filter>
        </receiver>
        <!--配置县级receiver，优先级最高，priority值越大，优先级越高-->
        <receiver android:name=".XianReceiver">
            <intent-filter android:priority="400">
                <action android:name="com.fengray.sender"/>
            </intent-filter>
        </receiver>
        <!--配置个人receiver，优先级最高，priority值越大，优先级越高-->
        <receiver android:name=".PersonReceiver">
            <intent-filter android:priority="200">
                <action android:name="com.fengray.sender"/>
            </intent-filter>
        </receiver>
    </application>

</manifest>

8.特殊广播接受者

操作特别频繁的广播事件，如屏幕解锁，在清单文件中注册是无效的

注册广播接收者的2种方式
1、动态注册：通过代码方式注册
2、在清单文件通过receiver tag节点静态发布

1、ScreenReceiver 类

public class ScreenReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        //获取当前广播事件的类型
        String action=intent.getAction();
        if ("android.intent.action.SCREEN_ON".equals(action)){
            Log.d("TAG", "onReceive: 屏幕解锁了");
        }else if ("android.intent.action.SCREEN_OFF".equals(action)){
            Log.d("TAG", "onReceive: 屏幕锁屏了");

        }

    }
}

2、MainActivity

import androidx.appcompat.app.AppCompatActivity;

import android.content.IntentFilter;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {
    private ScreenReceiver screenReceiver;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //动态注册广播接收者
        //创建接收者
        screenReceiver=new ScreenReceiver();
        //创建intenFilter对象
        IntentFilter intentFilter=new IntentFilter();
        //添加要注册的action
        intentFilter.addAction("android.intent.action.SCREEN_OFF");
        intentFilter.addAction("android.intent.action.SCREEN_ON");
        //动态注册广播接收者
        registerReceiver(screenReceiver,intentFilter);
    }

    @Override
    protected void onDestroy() {
        //当activity销毁的时候要取消注册广播接受者
        unregisterReceiver(screenReceiver);
    }
}

9.国际化

在res目录下创建不同国家语言环境集目录，目录是固定写法values-en zh…

10.两种context

this 是getApplicationContext的子类，在对话框中只能使用this代表context，因为他带有个tag，而getApplicationContext没有。

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;

import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;

public class MainActivity extends AppCompatActivity {

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

    public void btnClick(View view){
        //通过AlertDialog.builder构造器来创建
        AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）
        builder.setTitle("警告");
        builder.setMessage("世界上最遥远的距离是没有网络");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Log.d("TAG", "onClick: 您点击了确定按钮");
            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Log.d("TAG", "onClick: 您点击了取消按钮");

            }
        });

        builder.show();
    }
}

11.单选对话框

//单选对话框
    public void btnClick(View view){
        //通过AlertDialog.builder构造器来创建
        AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）
        builder.setTitle("请选择你喜欢的课程");
        //单选项的字符串数组
        final String items[]={"android","IOS","switf","kotlin","c"};
        builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //把选中的条目选出来
                String item=items[which];
                Toast.makeText(getApplicationContext(), item, Toast.LENGTH_SHORT).show();
                //关闭对话框
                dialog.dismiss();
            }
        });

        builder.show();
    }

12.多选对话框

    //多选对话框
    public void btnClick(View view){
        //通过AlertDialog.builder构造器来创建
        AlertDialog.Builder builder=new AlertDialog.Builder(this);//这里不能是用getApplicationContext（）
        builder.setTitle("请选择你喜欢的课程");
        //单选项的字符串数组
        final String items[]={"android","IOS","switf","kotlin","c"};
        final boolean[] checkedItems={true,false,false,true,false};//是否被选中
        builder.setMultiChoiceItems(items, checkedItems, new DialogInterface.OnMultiChoiceClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which, boolean isChecked) {

            }
        });
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //把选中的条目的数据取出来
                StringBuffer stringBuffer=new StringBuffer();

                for (int i=0; i<items.length;i++){
                    //判断一下选中的条目
                    if(checkedItems[i]){
                        String itemcontent=items[i];
                        stringBuffer.append(itemcontent+" ");
                    }
                }
                Toast.makeText(getApplicationContext(), stringBuffer.toString(), Toast.LENGTH_SHORT).show();
                //关闭对话框
                dialog.dismiss();
            }
        });
        builder.show();
    }
}

13.进度条对话框

 //进度条对话框
    public void btnClick(View view){
        //通过AlertDialog.builder构造器来创建
        final ProgressDialog dialog=new ProgressDialog(this);
        dialog.setTitle("正在玩命加载中……");
        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);


        dialog.show();
        new Thread(){
            @Override
            public void run() {
                dialog.setMax(100);
                for (int i=0;i<100;i++){
                    dialog.setProgress(i);
                    //睡眠一定的时间
                    SystemClock.sleep(50);
                }
                //关闭对话框
                dialog.dismiss();
            }
        }.start();
    }
}

14.帧动画

引入动画资源，在drawable当中引入动画图片
引入连续图片

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
    android:oneshot="false">
    <item android:drawable="@drawable/banana01" android:duration="200"/>
    <item android:drawable="@drawable/banana02" android:duration="200"/>
    <item android:drawable="@drawable/banana03" android:duration="200"/>
    <item android:drawable="@drawable/banana04" android:duration="200"/>
    <item android:drawable="@drawable/banana05" android:duration="200"/>

</animation-list>

MainActivity

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.drawable.AnimationDrawable;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private TextView mytv;
    private ImageView myimage;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myimage=findViewById(R.id.myimg);
        //设置imageview的背景资源
        myimage.setBackgroundResource(R.drawable.myanim);
        //获取animationDrawable类型
        AnimationDrawable imageAnimation=(AnimationDrawable)myimage.getBackground();
        //开启动画
        imageAnimation.start();

    }
}

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