版权声明:本文为博主原创文章,未经博主允许不得转载。 https://blog.csdn.net/u010046908/article/details/50697441
在开发过程中,突然发现广播的使用非常的多,因此作出如下三步使用流程,并封装一个BoradcastManager类:
1 、在任何地方发送广播
BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE);
2、页面在onCreate()中初始化广播
BroadcastManager.getInstance(mContext).addAction(ACTION_RECEIVE_MESSAGE, new BroadcastReceiver(){
@Override
public void onReceive(Context arg0, Intent intent) {
String command = intent.getAction();
if(!TextUtils.isEmpty(command)){
if((ACTION_RECEIVE_MESSAGE).equals(command)){
//获取json结果
String json = intent.getStringExtra("result");
//做你该做的事情
}
}
}
});
3、页面在ondestory销毁广播
BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE);
4、BroadcastManager的实现;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import com.chni.hms_library.util.Log;
import java.util.HashMap;
import java.util.Map;
/**
* @ClassName:BroadcastManager
* @描述:广播管理者
* @author lidong on 2016/2/18.
* @使用方法:
* (1)在任何地方发送广播
* BroadcastManager.getInstance(mContext).sendBroadcast(FindOrderActivity.ACTION_RECEIVE_MESSAGE);
* (2)页面在onCreate()中初始化广播
* BroadcastManager.getInstance(mContext).addAction(ACTION_RECEIVE_MESSAGE, new BroadcastReceiver(){
* @Override
* public void onReceive(Context arg0, Intent intent) {
* String command = intent.getAction();
* if(!TextUtils.isEmpty(command)){
* if((ACTION_RECEIVE_MESSAGE).equals(command)){
* //获取json结果
* String json = intent.getStringExtra("result");
* //做你该做的事情
* }
* }
* }
* });
* (3)页面在ondestory销毁广播
* BroadcastManager.getInstance(mContext).destroy(ACTION_RECEIVE_MESSAGE);
*/
public class BroadcastManager {
private Context mContext;
private static BroadcastManager instance;
private Map<String, BroadcastReceiver> receiverMap;
/**
* 构造方法
*
* @param context
*/
private BroadcastManager(Context context) {
this.mContext = context;
receiverMap = new HashMap<String, BroadcastReceiver>();
}
/**
* [获取BroadcastManager实例,单例模式实现]
*
* @param context
* @return
*/
public static BroadcastManager getInstance(Context context) {
if (instance == null) {
synchronized (BroadcastManager.class) {
if (instance == null) {
instance = new BroadcastManager(context);
}
}
}
return instance;
}
/**
* 添加Action,做广播的初始化
*
* @param
*/
public void addAction(String action, BroadcastReceiver receiver) {
try {
IntentFilter filter = new IntentFilter();
filter.addAction(action);
mContext.registerReceiver(receiver, filter);
receiverMap.put(action, receiver);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 添加Action,做广播的初始化
*
* @param
*/
public void addAction(String[] actions, BroadcastReceiver receiver) {
try {
IntentFilter filter = new IntentFilter();
for(String action:actions){
filter.addAction(action);
}
mContext.registerReceiver(receiver, filter);
for(String action:actions) {
receiverMap.put(action, receiver);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 发送广播
*
* @param action 唯一码
*/
public void sendBroadcast(String action) {
sendBroadcast(action, "");
}
/**
* 发送广播
*
* @param action 唯一码
* @param obj 参数
*/
public void sendBroadcast(String action, Object obj) {
try {
Intent intent = new Intent();
intent.setAction(action);
intent.putExtra("result", obj.toString());
mContext.sendBroadcast(intent);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* 销毁广播
* @param actions
*/
public void destroy(String... actions) {
try {
if (receiverMap != null) {
for(String action:actions){
BroadcastReceiver receiver = receiverMap.get(action);
if (receiver != null) {
mContext.unregisterReceiver(receiver);
}
}
}
} catch (IllegalArgumentException e){
Log.d("Broadcastmanager",e.toString());
}
}
}
基本上就这些了吧,欢迎大家提建议