我正在尝试使用推送通知做一个简单的网络视图应用。我的应用程序在后台注册并执行所有操作，但是当我发送推送并且我的手机应该显示推送通知时应用程序崩溃。我已经尝试在onReceive()方法中调试并设置断点，并且我还设置了断点，但应用程序只是崩溃并且在执行之前不会停止任何断点。我是android studio中的新手，我根本不了解所有的错误消息，所以如果有人可以帮我找到错误，我将不胜感激。
logCat：
05-04 14:41:46.349 30089-30089/com.example.alfredo.guiasandroid E/dalvikvm﹕ Could not find class 'android.app.Notification$Builder', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zza
05-04 14:41:46.349 30089-30089/com.example.alfredo.guiasandroid E/dalvikvm﹕ Could not find class 'android.app.AppOpsManager', referenced from method com.google.android.gms.common.GooglePlayServicesUtil.zza
05-04 14:43:34.879 10207-10207/? E/Launcher﹕ setWindowOpaque()
05-04 14:43:34.909 10207-10207/? E/Launcher﹕ MTP-LAUNCHER: media scanning not yet finished.
05-04 14:43:34.959 10207-10207/? E/Launcher﹕ setWindowOpaque()
05-04 14:43:44.879 30089-30089/com.example.alfredo.guiasandroid E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate receiver com.example.alfredo.guiasandroid.MainActivity$GcmBroadcastReceiver: java.lang.InstantiationException: com.example.alfredo.guiasandroid.MainActivity$GcmBroadcastReceiver
at android.app.ActivityThread.handleReceiver(ActivityThread.java:1777)
at android.app.ActivityThread.access$2400(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:985)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.InstantiationException: com.example.alfredo.guiasandroid.MainActivity$GcmBroadcastReceiver
at java.lang.Class.newInstanceImpl(Native Method)
at java.lang.Class.newInstance(Class.java:1409)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:1768)
at android.app.ActivityThread.access$2400(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:985)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
at dalvik.system.NativeStart.main(Native Method)
05-04 14:43:44.979 10104-10118/? E/﹕ Dumpstate > /data/log/dumpstate_app_error
05-04 14:43:50.839 10207-10207/? E/Launcher﹕ setWindowOpaque()
mainfest：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.alfredo.guiasandroid" android:versionCode="1" android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" android:targetSdkVersion="22"/>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<permission android:name="com.example.alfredo.guiasandroid.permission.C2D_MESSAGE"
android:protectionLevel="signature"/>
<uses-permission android:name="com.example.alfredo.guiasandroid.permission.C2D_MESSAGE"/>
<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />
<application
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name">
<!-- Required for applications which use Google Play Services. -->
<!-- <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> -->
<meta-data android:name="com.google.android.gms.version"
android:value="@integer/google_play_services_version" />
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:configChanges="orientation|keyboardHidden|screenSize"
android:launchMode="singleTop">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver
android:name=".MainActivity$GcmBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<!--android:name=".MainActivity$GcmBroadcastReceiver" -->
<intent-filter>
<!--
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
<category android:name="com.example.alfredo.webapp" />
-->
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<category android:name="com.example.alfredo.guiasandroid" />
</intent-filter>
</receiver>
<!--
<service android:name=".MainActivity$GcmIntentService" />
-->
<service android:name=".MainActivity$GcmIntentService" />
</application>
</manifest>
<!--
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.alfredo.guiasandroid" >
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
-->
的build.gradle：
apply plugin: 'com.android.application'
android {
compileSdkVersion 22
buildToolsVersion "22.0.1"
defaultConfig {
applicationId "com.example.alfredo.guiasandroid"
minSdkVersion 10
targetSdkVersion 22
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.1.1'
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:22.0.0'
compile 'com.google.android.gms:play-services:7.0.0'
}
mainActivity.java：
package com.example.alfredo.guiasandroid;
import android.os.Bundle;
import android.view.MenuItem;
import android.support.v4.app.NotificationCompat;
import android.app.Activity;
import android.app.IntentService;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.AsyncTask;
import android.os.SystemClock;
import android.support.v4.content.WakefulBroadcastReceiver;
import android.util.Log;
import android.view.KeyEvent;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextView;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.gcm.GoogleCloudMessaging;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.concurrent.atomic.AtomicInteger;
public class MainActivity extends Activity {
public static final String PROPERTY_REG_ID = "registration_id";
private static final String PROPERTY_APP_VERSION = "appVersion";
private final static int PLAY_SERVICES_RESOLUTION_REQUEST = 9000;
String SENDER_ID = "example_Number";
/**
* Tag used on log messages.
*/
static final String TAG = "GCMDemo";
private WebView myWebView = null;
TextView mDisplay;
GoogleCloudMessaging gcm;
AtomicInteger msgId = new AtomicInteger();
SharedPreferences prefs;
Context context;
String regid;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "hola coño");
setContentView(R.layout.activity_main);
//initialize variables
context = getApplicationContext();
gcm = GoogleCloudMessaging.getInstance(this);
prefs = getPreferences(0);
mDisplay = new TextView(getApplicationContext());
// web view
this.myWebView = (WebView) findViewById(R.id.activity_main_webview);
myWebView.setWebViewClient(new WebViewClient());
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.loadUrl("http://mongini.net/guiasdelsur");
//remove shared prefs
/*
SharedPreferences prefs = getGCMPreferences(context);
SharedPreferences.Editor edit = prefs.edit();
edit.clear();
edit.commit();
*/
/*
SharedPreferences clear_cache = getSharedPreferences("registration_id", MODE_PRIVATE);
SharedPreferences.Editor edit = clear_cache.edit();
edit.clear();
edit.commit();
*/
// Check device for Play Services APK. If check succeeds, proceed with
// GCM registration.
if (checkPlayServices()) {
gcm = GoogleCloudMessaging.getInstance(this);
regid = getRegistrationId(context);
if (regid.isEmpty()) {
registerInBackground();
Log.i(TAG,"ok");
}
} else {
Log.i(TAG, "No valid Google Play Services APK found.");
}
}
// You need to do the Play Services APK check here too.
@Override
protected void onResume() {
super.onResume();
checkPlayServices();
}
/**
* Check the device to make sure it has the Google Play Services APK. If
* it doesn't, display a dialog that allows users to download the APK from
* the Google Play Store or enable it in the device's system settings.
*/
private boolean checkPlayServices() {
int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
if (resultCode != ConnectionResult.SUCCESS) {
if (GooglePlayServicesUtil.isUserRecoverableError(resultCode)) {
GooglePlayServicesUtil.getErrorDialog(resultCode, this,
PLAY_SERVICES_RESOLUTION_REQUEST).show();
} else {
Log.d(TAG, "This device is not supported.");
finish();
}
return false;
}
return true;
}
/**
* Gets the current registration ID for application on GCM service.
* <p>
* If result is empty, the app needs to register.
*
* @return registration ID, or empty string if there is no existing
* registration ID.
*/
private String getRegistrationId(Context context) {
final SharedPreferences prefs = getGCMPreferences(context);
String registrationId = prefs.getString(PROPERTY_REG_ID, "");
if (registrationId.isEmpty()) {
Log.i(TAG, "Registration not found.");
return "";
}
// Check if app was updated; if so, it must clear the registration ID
// since the existing registration ID is not guaranteed to work with
// the new app version.
int registeredVersion = prefs.getInt(PROPERTY_APP_VERSION, Integer.MIN_VALUE);
int currentVersion = getAppVersion(context);
if (registeredVersion != currentVersion) {
Log.i(TAG, "App version changed.");
return "";
}
return registrationId;
}
/**
* @return Application's {@code SharedPreferences}.
*/
private SharedPreferences getGCMPreferences(Context context) {
// This sample app persists the registration ID in shared preferences, but
// how you store the registration ID in your app is up to you.
return getSharedPreferences(MainActivity.class.getSimpleName(),
Context.MODE_PRIVATE);
}
/**
* @return Application's version code from the {@code PackageManager}.
*/
private static int getAppVersion(Context context) {
try {
PackageInfo packageInfo = context.getPackageManager()
.getPackageInfo(context.getPackageName(), 0);
return packageInfo.versionCode;
} catch (PackageManager.NameNotFoundException e) {
// should never happen
throw new RuntimeException("Could not get package name: " + e);
}
}
/**
* Registers the application with GCM servers asynchronously.
* <p>
* Stores the registration ID and app versionCode in the application's
* shared preferences. com.example.alfredo.webapp.MainActivity
*/
private void registerInBackground() {
new AsyncTask<Void,Void,String>() {
@Override
protected String doInBackground(Void... params) {
String msg = "";
try {
regid = gcm.register(SENDER_ID);
msg = "Device registered, registration id=" + regid;
// You should send the registration ID to your server over HTTP,
// so it can use GCM/HTTP or CCS to send messages to your app.
sendRegistrationIdToBackend();
// Save the regid for future use - no need to register again.
SharedPreferences.Editor editor = prefs.edit();
editor.putString(PROPERTY_REG_ID, regid);
editor.commit();
} catch (IOException ex) {
msg = "Error :" + ex.getMessage();
}
return msg;
}
// Once registration is done, display the registration status
// string in the Activity's UI.
@Override
protected void onPostExecute(String msg) {
mDisplay.append(msg + "\n");
}
}.execute();
}
private String readStream(InputStream is) {
try {
ByteArrayOutputStream bo = new ByteArrayOutputStream();
int i = is.read();
while(i != -1) {
bo.write(i);
i = is.read();
}
return bo.toString();
} catch (IOException e) {
return "";
}
}
/**
* Sends the registration ID to your server over HTTP, so it can use GCM/HTTP
* or CCS to send messages to your app. Not needed for this demo since the
* device sends upstream messages to a server that echoes back the message
* using the 'from' address in the message.
*/
private void sendRegistrationIdToBackend() {
// Your implementation here.
HttpURLConnection urlConnection = null;
try {
URL url = new URL("http://www.example.com/example.php?host=localhost&dbname=db_name&user=user&pass=pass&idPush="+regid);
urlConnection = (HttpURLConnection) url.openConnection();
/** Connecting to url */
urlConnection.connect();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
readStream(in);
}catch(Exception e){
Log.d("Exception url ", e.toString());
}finally {
urlConnection.disconnect();
}
}
/**
* Stores the registration ID and app versionCode in the application's
* {@code SharedPreferences}.
*
* @param context application's context.
* @param regId registration ID
*/
//aqui peta
private void storeRegistrationId(Context context, String regId) {
final SharedPreferences prefs = getGCMPreferences(context);
int appVersion = getAppVersion(context);
Log.i(TAG, "Saving regId on app version " + appVersion);
SharedPreferences.Editor editor = prefs.edit();
editor.putString(PROPERTY_REG_ID, regId);
editor.putInt(PROPERTY_APP_VERSION, appVersion);
editor.commit();
}
public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// Explicitly specify that GcmIntentService will handle the intent.
ComponentName comp = new ComponentName(context.getPackageName(),
GcmIntentService.class.getName());
// Start the service, keeping the device awake while it is launching.
startWakefulService(context, (intent.setComponent(comp)));
setResultCode(Activity.RESULT_OK);
}
}
public class GcmIntentService extends IntentService {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public GcmIntentService() {
super("GcmIntentService");
}
@Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
// The getMessageType() intent parameter must be the intent you received
// in your BroadcastReceiver.
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) { // has effect of unparcelling Bundle
/*
* Filter messages based on message type. Since it is likely that GCM
* will be extended in the future with new message types, just ignore
* any message types you're not interested in, or that you don't
* recognize.
*/
if (GoogleCloudMessaging.
MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
sendNotification("Send error: " + extras.toString());
} else if (GoogleCloudMessaging.
MESSAGE_TYPE_DELETED.equals(messageType)) {
sendNotification("Deleted messages on server: " +
extras.toString());
// If it's a regular GCM message, do some work.
} else if (GoogleCloudMessaging.
MESSAGE_TYPE_MESSAGE.equals(messageType)) {
// This loop represents the service doing some work.
for (int i=0; i<5; i++) {
Log.i(TAG, "Working... " + (i+1)
+ "/5 @ " + SystemClock.elapsedRealtime());
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
// Post notification of received message.
sendNotification("Received: " + extras.toString());
Log.i(TAG, "Received: " + extras.toString());
}
}
// Release the wake lock provided by the WakefulBroadcastReceiver.
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
// Put the message into a notification and post it.
// This is just one simple example of what you might choose to do with
// a GCM message.
private void sendNotification(String msg) {
mNotificationManager = (NotificationManager)
this.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, MainActivity.class), 0);
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(this)
//.setSmallIcon(R.drawable.ic_stat_gcm)
.setContentTitle("GCM Notification")
.setStyle(new NotificationCompat.BigTextStyle()
.bigText(msg))
.setContentText(msg);
mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
}
}
//back device button
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && this.myWebView.canGoBack()) {
this.myWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
@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);
}
}
答案 0 :(得分：0)
AFAIK内部BroadcastReceiver只有在static时才有效。
实际上$标志着一个静态的内部类。