极光推送实现锁屏推送以及推送给指定的人

极光推送的配置，在官方文档中已经很详细地描述了；有手动导入跟jcenter导入两种方式，推荐使用jcenter；

//在gradle中添加android {    ......    defaultConfig {        applicationId "com.xxx.xxx" //JPush上注册的包名.        ......        ndk {            //选择要添加的对应cpu类型的.so库。             abiFilters 'armeabi', 'armeabi-v7a', 'armeabi-v8a'             // 还可以添加 'x86', 'x86_64', 'mips', 'mips64'        }        manifestPlaceholders = [            JPUSH_PKGNAME : applicationId,            JPUSH_APPKEY : "你的appkey", //JPush上注册的包名对应的appkey.            JPUSH_CHANNEL : "developer-default", //暂时填写默认值即可.        ]        ......    }    ......}dependencis {    ......    compile 'cn.jiguang:jpush:2.1.8'  // 此处以SDK 2.1.8版本为例    ......}

下载官方的Demo，将里面的三个文件引入到自己的工程中;

然后，在启动界面注册极光推送，同时也可以修改默认的通知栏样式；

  // 初始化 JPush。如果已经初始化，但没有登录成功，则执行重新登录。    private void initm() {        JPushInterface.init(getApplicationContext());    }    //for receive customer msg from jpush server    private MessageReceiver mMessageReceiver;    public static final String MESSAGE_RECEIVED_ACTION = "com.zerom.clothesnews.MESSAGE_RECEIVED_ACTION";    public static final String KEY_TITLE = "title";    public static final String KEY_MESSAGE = "message";    public static final String KEY_EXTRAS = "extras";    public void registerMessageReceiver() {        mMessageReceiver = new MessageReceiver();        IntentFilter filter = new IntentFilter();        filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);        filter.addAction(MESSAGE_RECEIVED_ACTION);        registerReceiver(mMessageReceiver, filter);    }    public class MessageReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            if (MESSAGE_RECEIVED_ACTION.equals(intent.getAction())) {                String messge = intent.getStringExtra(KEY_MESSAGE);                String extras = intent.getStringExtra(KEY_EXTRAS);                StringBuilder showMsg = new StringBuilder();                showMsg.append(KEY_MESSAGE + " : " + messge + "\n");                if (!JpushUtil.isEmpty(extras)) {                    showMsg.append(KEY_EXTRAS + " : " + extras + "\n");                }            }        }    }    public static void setNotification() {        CustomPushNotificationBuilder builder = new CustomPushNotificationBuilder(                MyApplication.getAppContext(),                R.layout.layout_notification, R.id.icon, R.id.title,                R.id.text);        builder.layoutIconDrawable = R.mipmap.ic_launcher;        builder.developerArg0 = "developerArg2";        JPushInterface.setPushNotificationBuilder(2, builder);    }

如果自己搭建后台服务器的话，需要设定一个字段，作为后天的识别；

 JpushUtil.setAlias(context, "给后台的字段");

在JpushReceiver中可以对接收到的后台字段进行处理，比如说识别到是信息中心的字段就跳到信息中心，商品字段就跳到商品界面等等；

//接收到的后台的返回数据 String type = bundle.getString(JPushInterface.EXTRA_EXTRA);

还有一种情况，就是推送的时候需要推送给特定的人，而不是所有的人;首先，在JpushUtil中添加多一个方法；

public static void setAliasAndTag(Context context, Set<String> tag) {        TagAliasCallback tagAliasCallback = new TagAliasCallback() {            @Override            public void gotResult(int i, String s, Set<String> set) {            }        };        JPushInterface.setAliasAndTags(context, null, tag, tagAliasCallback);    }

然后把每个用户的特定值设置为Tag，比如说我的app用的是用户id作为TAG，所以我在用户登录成功之后，则把用户ID设置为TAG，到时候后台根据TAG，也就是用户ID就可以推送给指定的人了；

            Set<String> set = new HashSet<>();            String Tag = resultsBean.getUserid() + "";            set.add(Tag);            JpushUtil.setAliasAndTag(context, set);

做完上面的操作，就能接收到推送消息了，但是，有时候会发现，当我们把APP后台或者手机锁屏的时候，就收不到推送的消息了；解决办法很简单，因为极光推送是通过BroadcastReceiver调起通知栏的，所以只要动态注册BroadcastReceiver即可实现APP在后台运行的时候也能收到推送消息，而动态注册的方法则是通过新建一个Service，启动Service，通过Service动态注册BroadcastReceiver；

public class RegisterService extends Service {    public static boolean isForeground = false;    @Override    public IBinder onBind(Intent intent) {        return null;    }    @Override    public void onCreate() {        super.onCreate();        isForeground = true;        initm();        registerMessageReceiver();        JpushUtil.setAlias(this, "normal");        WelcomeActivity.setNotification();    }    @Override    public void onDestroy() {        super.onDestroy();        Intent localIntent = new Intent();        localIntent.setClass(this, RegisterService.class);        this.startService(localIntent);    }    // 初始化 JPush。如果已经初始化，但没有登录成功，则执行重新登录。    private void initm() {        JPushInterface.init(getApplicationContext());    }    private MessageReceiver mMessageReceiver;    public static final String MESSAGE_RECEIVED_ACTION = "com.taorouw.MESSAGE_RECEIVED_ACTION";    public static final String KEY_TITLE = "title";    public static final String KEY_MESSAGE = "message";    public static final String KEY_EXTRAS = "extras";    public void registerMessageReceiver() {        mMessageReceiver = new MessageReceiver();        IntentFilter filter = new IntentFilter();        filter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);        filter.addAction(MESSAGE_RECEIVED_ACTION);        registerReceiver(mMessageReceiver, filter);    }    public class MessageReceiver extends BroadcastReceiver {        @Override        public void onReceive(Context context, Intent intent) {            if (MESSAGE_RECEIVED_ACTION.equals(intent.getAction())) {                String messge = intent.getStringExtra(KEY_MESSAGE);                String extras = intent.getStringExtra(KEY_EXTRAS);                StringBuilder showMsg = new StringBuilder();                showMsg.append(KEY_MESSAGE + " : " + messge + "\n");                if (!JpushUtil.isEmpty(extras)) {                    showMsg.append(KEY_EXTRAS + " : " + extras + "\n");                }            }        }    }}

最后在AndroidManifest中注册Service，并在启动界面启动Service；

startService(new Intent(WelcomeActivity.this, RegisterService.class));

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