如何将 C2DM 消息显示为推送通知（在 GCMIntentService class 的 onMessage() 函数上收到）
How to display C2DM message as a push notification (recived on onMessage() function of GCMIntentService class)
大家好，我根据由提供的教程在我的应用程序中实现了 C@DM
http://avilyne.com/?p=267.It 有效，但我的问题是我只在我的 activity 中收到设置在文本上的消息 view.But 我希望它在应用程序之外，即使应用程序不工作，当我点击它时我想从中提取一个数字并想启动一个特定的 activity（不在家 activity），当返回时按它回到家 activity.
我的GCMIntentServiceclass是这样的（我在项目中添加了gcm.jar）
package com.lejin.myapp;
/**
*/
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import com.google.android.gcm.GCMBaseIntentService;
public class GCMIntentService extends GCMBaseIntentService {
private static final String PROJECT_ID = "76973814590";
private static final String TAG = "GCMIntentService";
public GCMIntentService()
{
super(PROJECT_ID);
Log.d(TAG, "GCMIntentService init");
}
@Override
protected void onError(Context ctx, String sError) {
// TODO Auto-generated method stub
Log.d(TAG, "Error: " + sError);
}
@Override
protected void onMessage(Context ctx, Intent intent) {
Log.d(TAG, "Message Received");
String message = intent.getStringExtra("message");
sendGCMIntent(ctx, message);
}
private void sendGCMIntent(Context ctx, String message) {
Intent broadcastIntent = new Intent();
broadcastIntent.setAction("GCM_RECEIVED_ACTION");
broadcastIntent.putExtra("gcm", message);
ctx.sendBroadcast(broadcastIntent);
}
@Override
protected void onRegistered(Context ctx, String regId) {
// TODO Auto-generated method stub
// send regId to your server
Log.d(TAG, regId);
}
@Override
protected void onUnregistered(Context ctx, String regId) {
// TODO Auto-generated method stub
// send notification to your server to remove that regId
}
}
我在 activity
上使用广播接收器收到了这条消息
package com.lejin.myapp;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gcm.GCMRegistrar;
public class MainActivity extends Activity {
// This is the project id generated from the Google console when
// you defined a Google APIs project.
private static final String PROJECT_ID = "76973814590";
// This tag is used in Log.x() calls
private static final String TAG = "MainActivity";
// This string will hold the lengthy registration id that comes
// from GCMRegistrar.register()
private String regId = "";
// These strings are hopefully self-explanatory
private String registrationStatus = "Not yet registered";
private String broadcastMessage = "No broadcast message";
// This intent filter will be set to filter on the string "GCM_RECEIVED_ACTION"
IntentFilter gcmFilter;
// textviews used to show the status of our app's registration, and the latest
// broadcast message.
TextView tvRegStatusResult;
TextView tvBroadcastMessage;
// This broadcastreceiver instance will receive messages broadcast
// with the action "GCM_RECEIVED_ACTION" via the gcmFilter
// A BroadcastReceiver must override the onReceive() event.
private BroadcastReceiver gcmReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
broadcastMessage = intent.getExtras().getString("gcm");
if (broadcastMessage != null) {
// display our received message
tvBroadcastMessage.setText(broadcastMessage);
}
}
};
// Reminder that the onCreate() method is not just called when an app is first opened,
// but, among other occasions, is called when the device changes orientation.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvBroadcastMessage = (TextView) findViewById(R.id.tv_message);
tvRegStatusResult = (TextView) findViewById(R.id.tv_reg_status_result);
// Create our IntentFilter, which will be used in conjunction with a
// broadcast receiver.
gcmFilter = new IntentFilter();
gcmFilter.addAction("GCM_RECEIVED_ACTION");
registerClient();
}
// This registerClient() method checks the current device, checks the
// manifest for the appropriate rights, and then retrieves a registration id
// from the GCM cloud. If there is no registration id, GCMRegistrar will
// register this device for the specified project, which will return a
// registration id.
public void registerClient() {
try {
// Check that the device supports GCM (should be in a try / catch)
GCMRegistrar.checkDevice(this);
// Check the manifest to be sure this app has all the required
// permissions.
GCMRegistrar.checkManifest(this);
// Get the existing registration id, if it exists.
regId = GCMRegistrar.getRegistrationId(this);
if (regId.equals("")) {
registrationStatus = "Registering...";
tvRegStatusResult.setText(registrationStatus);
// register this device for this project
GCMRegistrar.register(this, PROJECT_ID);
regId = GCMRegistrar.getRegistrationId(this);
Toast.makeText(getApplicationContext(),regId,Toast.LENGTH_LONG).show();
registrationStatus = "Registration Acquired";
// This is actually a dummy function. At this point, one
// would send the registration id, and other identifying
// information to your server, which should save the id
// for use when broadc
// asting messages.
sendRegistrationToServer();
} else {
registrationStatus = "Already registered";
}
} catch (Exception e) {
e.printStackTrace();
registrationStatus = e.getMessage();
}
Log.d(TAG, registrationStatus);
tvRegStatusResult.setText(registrationStatus);
// This is part of our CHEAT. For this demo, you'll need to
// capture this registration id so it can be used in our demo web
// service.
Toast.makeText(getApplicationContext(),regId,Toast.LENGTH_LONG).show();
Log.d(TAG, regId);
}
private void sendRegistrationToServer() {
// This is an empty placeholder for an asynchronous task to post the
// registration
// id and any other identifying information to your server.
}
// If the user changes the orientation of his phone, the current activity
// is destroyed, and then re-created. This means that our broadcast message
// will get wiped out during re-orientation.
// So, we save the broadcastmessage during an onSaveInstanceState()
// event, which is called prior to the destruction of the activity.
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
// If the user changes the orientation of his phone, the current activity
// is destroyed, and then re-created. This means that our broadcast message
// will get wiped out during re-orientation.
// So, we save the broadcastmessage during an onSaveInstanceState()
// event, which is called prior to the destruction of the activity.
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putString("BroadcastMessage", broadcastMessage);
}
// When an activity is re-created, the os generates an onRestoreInstanceState()
// event, passing it a bundle that contains any values that you may have put
// in during onSaveInstanceState()
// We can use this mechanism to re-display our last broadcast message.
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
broadcastMessage = savedInstanceState.getString("BroadcastMessage");
tvBroadcastMessage.setText(broadcastMessage);
}
// If our activity is paused, it is important to UN-register any
// broadcast receivers.
@Override
protected void onPause() {
unregisterReceiver(gcmReceiver);
super.onPause();
}
// When an activity is resumed, be sure to register any
// broadcast receivers with the appropriate intent
@Override
protected void onResume() {
super.onResume();
registerReceiver(gcmReceiver, gcmFilter);
}
// There are no menus for this demo app. This is just
// boilerplate code.
// NOTE the call to GCMRegistrar.onDestroy()
@Override
public void onDestroy() {
GCMRegistrar.onDestroy(this);
super.onDestroy();
}
}
我想像在 whats 应用程序或其他常见应用程序中显示的普通推送通知一样显示此消息，需要根据此打开特定 activity（不是主页 activity）
您需要做的是，修改您的 onMessage 函数，以便为您的应用创建通知（推送通知与应用通知是不同的概念），而不是调用 sendGCMIntent。
来自 here，您应该执行以下操作：
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("My notification")
.setContentText("Hello World!");
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(this, TheActivityYouWantToOpen.class);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(MainActivity.class); //to allow you to use back button
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// my_notification_idallows you to update the notification later on.
mNotificationManager.notify(my_notification_id, mBuilder.build());
通知 ID 只是一个整数，您可以使用它来更新现有通知。
希望对您有所帮助
大家好，我根据由提供的教程在我的应用程序中实现了 C@DM http://avilyne.com/?p=267.It 有效，但我的问题是我只在我的 activity 中收到设置在文本上的消息 view.But 我希望它在应用程序之外，即使应用程序不工作，当我点击它时我想从中提取一个数字并想启动一个特定的 activity（不在家 activity），当返回时按它回到家 activity.
我的GCMIntentServiceclass是这样的（我在项目中添加了gcm.jar）
package com.lejin.myapp;
/**
*/
import android.content.Context;
import android.content.Intent;
import android.util.Log;
import com.google.android.gcm.GCMBaseIntentService;
public class GCMIntentService extends GCMBaseIntentService {
private static final String PROJECT_ID = "76973814590";
private static final String TAG = "GCMIntentService";
public GCMIntentService()
{
super(PROJECT_ID);
Log.d(TAG, "GCMIntentService init");
}
@Override
protected void onError(Context ctx, String sError) {
// TODO Auto-generated method stub
Log.d(TAG, "Error: " + sError);
}
@Override
protected void onMessage(Context ctx, Intent intent) {
Log.d(TAG, "Message Received");
String message = intent.getStringExtra("message");
sendGCMIntent(ctx, message);
}
private void sendGCMIntent(Context ctx, String message) {
Intent broadcastIntent = new Intent();
broadcastIntent.setAction("GCM_RECEIVED_ACTION");
broadcastIntent.putExtra("gcm", message);
ctx.sendBroadcast(broadcastIntent);
}
@Override
protected void onRegistered(Context ctx, String regId) {
// TODO Auto-generated method stub
// send regId to your server
Log.d(TAG, regId);
}
@Override
protected void onUnregistered(Context ctx, String regId) {
// TODO Auto-generated method stub
// send notification to your server to remove that regId
}
}
我在 activity
上使用广播接收器收到了这条消息 package com.lejin.myapp;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import com.google.android.gcm.GCMRegistrar;
public class MainActivity extends Activity {
// This is the project id generated from the Google console when
// you defined a Google APIs project.
private static final String PROJECT_ID = "76973814590";
// This tag is used in Log.x() calls
private static final String TAG = "MainActivity";
// This string will hold the lengthy registration id that comes
// from GCMRegistrar.register()
private String regId = "";
// These strings are hopefully self-explanatory
private String registrationStatus = "Not yet registered";
private String broadcastMessage = "No broadcast message";
// This intent filter will be set to filter on the string "GCM_RECEIVED_ACTION"
IntentFilter gcmFilter;
// textviews used to show the status of our app's registration, and the latest
// broadcast message.
TextView tvRegStatusResult;
TextView tvBroadcastMessage;
// This broadcastreceiver instance will receive messages broadcast
// with the action "GCM_RECEIVED_ACTION" via the gcmFilter
// A BroadcastReceiver must override the onReceive() event.
private BroadcastReceiver gcmReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
broadcastMessage = intent.getExtras().getString("gcm");
if (broadcastMessage != null) {
// display our received message
tvBroadcastMessage.setText(broadcastMessage);
}
}
};
// Reminder that the onCreate() method is not just called when an app is first opened,
// but, among other occasions, is called when the device changes orientation.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tvBroadcastMessage = (TextView) findViewById(R.id.tv_message);
tvRegStatusResult = (TextView) findViewById(R.id.tv_reg_status_result);
// Create our IntentFilter, which will be used in conjunction with a
// broadcast receiver.
gcmFilter = new IntentFilter();
gcmFilter.addAction("GCM_RECEIVED_ACTION");
registerClient();
}
// This registerClient() method checks the current device, checks the
// manifest for the appropriate rights, and then retrieves a registration id
// from the GCM cloud. If there is no registration id, GCMRegistrar will
// register this device for the specified project, which will return a
// registration id.
public void registerClient() {
try {
// Check that the device supports GCM (should be in a try / catch)
GCMRegistrar.checkDevice(this);
// Check the manifest to be sure this app has all the required
// permissions.
GCMRegistrar.checkManifest(this);
// Get the existing registration id, if it exists.
regId = GCMRegistrar.getRegistrationId(this);
if (regId.equals("")) {
registrationStatus = "Registering...";
tvRegStatusResult.setText(registrationStatus);
// register this device for this project
GCMRegistrar.register(this, PROJECT_ID);
regId = GCMRegistrar.getRegistrationId(this);
Toast.makeText(getApplicationContext(),regId,Toast.LENGTH_LONG).show();
registrationStatus = "Registration Acquired";
// This is actually a dummy function. At this point, one
// would send the registration id, and other identifying
// information to your server, which should save the id
// for use when broadc
// asting messages.
sendRegistrationToServer();
} else {
registrationStatus = "Already registered";
}
} catch (Exception e) {
e.printStackTrace();
registrationStatus = e.getMessage();
}
Log.d(TAG, registrationStatus);
tvRegStatusResult.setText(registrationStatus);
// This is part of our CHEAT. For this demo, you'll need to
// capture this registration id so it can be used in our demo web
// service.
Toast.makeText(getApplicationContext(),regId,Toast.LENGTH_LONG).show();
Log.d(TAG, regId);
}
private void sendRegistrationToServer() {
// This is an empty placeholder for an asynchronous task to post the
// registration
// id and any other identifying information to your server.
}
// If the user changes the orientation of his phone, the current activity
// is destroyed, and then re-created. This means that our broadcast message
// will get wiped out during re-orientation.
// So, we save the broadcastmessage during an onSaveInstanceState()
// event, which is called prior to the destruction of the activity.
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
// If the user changes the orientation of his phone, the current activity
// is destroyed, and then re-created. This means that our broadcast message
// will get wiped out during re-orientation.
// So, we save the broadcastmessage during an onSaveInstanceState()
// event, which is called prior to the destruction of the activity.
@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
super.onSaveInstanceState(savedInstanceState);
savedInstanceState.putString("BroadcastMessage", broadcastMessage);
}
// When an activity is re-created, the os generates an onRestoreInstanceState()
// event, passing it a bundle that contains any values that you may have put
// in during onSaveInstanceState()
// We can use this mechanism to re-display our last broadcast message.
@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
broadcastMessage = savedInstanceState.getString("BroadcastMessage");
tvBroadcastMessage.setText(broadcastMessage);
}
// If our activity is paused, it is important to UN-register any
// broadcast receivers.
@Override
protected void onPause() {
unregisterReceiver(gcmReceiver);
super.onPause();
}
// When an activity is resumed, be sure to register any
// broadcast receivers with the appropriate intent
@Override
protected void onResume() {
super.onResume();
registerReceiver(gcmReceiver, gcmFilter);
}
// There are no menus for this demo app. This is just
// boilerplate code.
// NOTE the call to GCMRegistrar.onDestroy()
@Override
public void onDestroy() {
GCMRegistrar.onDestroy(this);
super.onDestroy();
}
}
我想像在 whats 应用程序或其他常见应用程序中显示的普通推送通知一样显示此消息，需要根据此打开特定 activity（不是主页 activity）
您需要做的是，修改您的 onMessage 函数，以便为您的应用创建通知（推送通知与应用通知是不同的概念），而不是调用 sendGCMIntent。
来自 here，您应该执行以下操作：
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.notification_icon)
.setContentTitle("My notification")
.setContentText("Hello World!");
// Creates an explicit intent for an Activity in your app
Intent resultIntent = new Intent(this, TheActivityYouWantToOpen.class);
// The stack builder object will contain an artificial back stack for the
// started Activity.
// This ensures that navigating backward from the Activity leads out of
// your application to the Home screen.
TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// Adds the back stack for the Intent (but not the Intent itself)
stackBuilder.addParentStack(MainActivity.class); //to allow you to use back button
// Adds the Intent that starts the Activity to the top of the stack
stackBuilder.addNextIntent(resultIntent);
PendingIntent resultPendingIntent =
stackBuilder.getPendingIntent(
0,
PendingIntent.FLAG_UPDATE_CURRENT
);
mBuilder.setContentIntent(resultPendingIntent);
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// my_notification_idallows you to update the notification later on.
mNotificationManager.notify(my_notification_id, mBuilder.build());
通知 ID 只是一个整数，您可以使用它来更新现有通知。
希望对您有所帮助