2
알림, Asynctasks 및 브로드 캐스트 Recievers를 다루는 과정 프로젝트를 진행 중입니다. 나는 세 가지 테스트를 가지고있다. 첫 번째 테스트는 스택 추적 오류와 함께 실패한다 :'java.lang.IllegalArgumentException'으로 인해 '계측 실행이 실패했습니다.'를 수정하는 방법
테스트를 완료하지 못했습니다. 이유 : ''java.lang.IllegalArgumentException '으로 인해 계측 실행에 실패했습니다. 자세한 내용은 장치 logcat을 확인하십시오.
Logcat이 큽니다. 내가 무엇을 찾고 있는지 말해 줄 수 있다면 나는 tag : function으로 그것을 좁힐 수있다.
다른 두 테스트는 정상적으로 실행됩니다.
아래의 첫 번째 파일은 Eclipse에서 오류를 표시하지 않습니다.
public class MainActivity extends Activity implements SelectionListener {
public static final String TWEET_FILENAME = "tweets.txt";
public static final String[] FRIENDS = { "taylorswift13", "msrebeccablack",
"ladygaga" };
public static final String DATA_REFRESHED_ACTION ="course.labs.notificationslab.DATA_REFRESHED";
private static final int NUM_FRIENDS = 3;
private static final String URL_LGAGA = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Fladygaga.txt";
private static final String URL_RBLACK = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Frebeccablack.txt";
private static final String URL_TSWIFT = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Ftaylorswift.txt";
private static final String TAG = "Lab-Notifications";
private static final long TWO_MIN = 2 * 60 * 1000;
private FragmentManager mFragmentManager;
private FriendsFragment mFriendsFragment;
private boolean mIsFresh;
private BroadcastReceiver mRefreshReceiver;
private int mFeedSelected = UNSELECTED;
private FeedFragment mFeedFragment;
private String[] mRawFeeds = new String[3];
private String[] mProcessedFeeds = new String[3];
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mFragmentManager = getFragmentManager();
addFriendsFragment();
// The feed is fresh if it was downloaded less than 2 minutes ago
mIsFresh = (System.currentTimeMillis() - getFileStreamPath(
TWEET_FILENAME).lastModified()) < TWO_MIN;
ensureData();
}
// Add Friends Fragment to Activity
private void addFriendsFragment() {
mFriendsFragment = new FriendsFragment();
mFriendsFragment.setArguments(getIntent().getExtras());
FragmentTransaction transaction = mFragmentManager.beginTransaction();
transaction.add(R.id.fragment_container, mFriendsFragment);
transaction.commit();
}
// If stored Tweets are not fresh, reload them from network
// Otherwise, load them from file
private void ensureData() {
log("In ensureData(), mIsFresh:" + mIsFresh);
if (!mIsFresh) {
// TODO:
// Show a Toast Notification to inform user that
// the app is "Downloading Tweets from Network"
log ("Issuing Toast Message");
Toast.makeText(getApplicationContext(), "refreshing Tweets",Toast.LENGTH_LONG).show();
// TODO:
// Start new AsyncTask to download Tweets from network
new DownloaderTask(MainActivity.this).execute(MainActivity.URL_LGAGA,MainActivity.URL_RBLACK,MainActivity.URL_TSWIFT);
// Set up a BroadcastReceiver to receive an Intent when download
// finishes.
mRefreshReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
log("BroadcastIntent received in MainActivity");
// TODO:
// Check to make sure this is an ordered broadcast
// Let sender know that the Intent was received
// by setting result code to RESULT_OK
sendOrderedBroadcast(new Intent(), null, null, null, RESULT_OK, null, null);
}
};
} else {
loadTweetsFromFile();
parseJSON();
updateFeed();
}
}
// Called when new Tweets have been downloaded
public void setRefreshed(String[] feeds) {
mRawFeeds[0] = feeds[0];
mRawFeeds[1] = feeds[1];
mRawFeeds[2] = feeds[2];
parseJSON();
updateFeed();
mIsFresh = true;
};
// Called when a Friend is clicked on
@Override
public void onItemSelected(int position) {
mFeedSelected = position;
mFeedFragment = addFeedFragment();
if (mIsFresh) {
updateFeed();
}
}
// Calls FeedFragement.update, passing in the
// the tweets for the currently selected friend
void updateFeed() {
if (null != mFeedFragment)
mFeedFragment.update(mProcessedFeeds[mFeedSelected]);
}
// Add FeedFragment to Activity
private FeedFragment addFeedFragment() {
FeedFragment feedFragment;
feedFragment = new FeedFragment();
FragmentTransaction transaction = mFragmentManager.beginTransaction();
transaction.replace(R.id.fragment_container, feedFragment);
transaction.addToBackStack(null);
transaction.commit();
mFragmentManager.executePendingTransactions();
return feedFragment;
}
// Register the BroadcastReceiver
@Override
protected void onResume() {
super.onResume();
// TODO:
// Register the BroadcastReceiver to receive a
// DATA_REFRESHED_ACTION broadcast
IntentFilter intentFilter = new IntentFilter(DATA_REFRESHED_ACTION);
registerReceiver(mRefreshReceiver, intentFilter);
}
@Override
protected void onPause() {
// TODO:
// Unregister the BroadcastReceiver
unregisterReceiver(mRefreshReceiver);
super.onPause();
}
// Convert raw Tweet data (in JSON format) into text for display
public void parseJSON() {
JSONArray[] JSONFeeds = new JSONArray[NUM_FRIENDS];
for (int i = 0; i < NUM_FRIENDS; i++) {
try {
JSONFeeds[i] = new JSONArray(mRawFeeds[i]);
} catch (JSONException e) {
e.printStackTrace();
}
String name = "";
String tweet = "";
JSONArray tmp = JSONFeeds[i];
// string buffer for twitter feeds
StringBuffer tweetRec = new StringBuffer("");
for (int j = 0; j < tmp.length(); j++) {
try {
tweet = tmp.getJSONObject(j).getString("text");
JSONObject user = (JSONObject) tmp.getJSONObject(j).get(
"user");
name = user.getString("name");
} catch (JSONException e) {
e.printStackTrace();
}
tweetRec.append(name + " - " + tweet + "\n\n");
}
mProcessedFeeds[i] = tweetRec.toString();
}
}
// Retrieve feeds text from a file
// Store them in mRawTextFeed[]
private void loadTweetsFromFile() {
BufferedReader reader = null;
try {
FileInputStream fis = openFileInput(TWEET_FILENAME);
reader = new BufferedReader(new InputStreamReader(fis));
String s = null;
int i = 0;
while (null != (s = reader.readLine()) && i < NUM_FRIENDS) {
mRawFeeds[i] = s;
i++;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != reader) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
// Simplified log output method
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
이 두 번째 클래스 파일이며이 지역 변수 notificationBuilder 사용하지 않는라는 경고를 보여줍니다.
public class MainActivity extends Activity implements SelectionListener {
public static final String TWEET_FILENAME = "tweets.txt";
public static final String[] FRIENDS = { "taylorswift13", "msrebeccablack",
"ladygaga" };
public static final String DATA_REFRESHED_ACTION = "course.labs.notificationslab.DATA_REFRESHED";
private static final int NUM_FRIENDS = 3;
private static final String URL_LGAGA = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Fladygaga.txt";
private static final String URL_RBLACK = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Frebeccablack.txt";
private static final String URL_TSWIFT = "https://d396qusza40orc.cloudfront.net/android%2FLabs%2FUserNotifications%2Ftaylorswift.txt";
private static final String TAG = "Lab-Notifications";
private static final long TWO_MIN = 2 * 60 * 1000;
private static final int UNSELECTED = -1;
private FragmentManager mFragmentManager;
private FriendsFragment mFriendsFragment;
private boolean mIsFresh;
private BroadcastReceiver mRefreshReceiver;
private int mFeedSelected = UNSELECTED;
private FeedFragment mFeedFragment;
private String[] mRawFeeds = new String[3];
private String[] mProcessedFeeds = new String[3];
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mFragmentManager = getFragmentManager();
addFriendsFragment();
// The feed is fresh if it was downloaded less than 2 minutes ago
mIsFresh = (System.currentTimeMillis() - getFileStreamPath(
TWEET_FILENAME).lastModified()) < TWO_MIN;
ensureData();
}
// Add Friends Fragment to Activity
private void addFriendsFragment() {
mFriendsFragment = new FriendsFragment();
mFriendsFragment.setArguments(getIntent().getExtras());
FragmentTransaction transaction = mFragmentManager.beginTransaction();
transaction.add(R.id.fragment_container, mFriendsFragment);
transaction.commit();
}
// If stored Tweets are not fresh, reload them from network
// Otherwise, load them from file
private void ensureData() {
log("In ensureData(), mIsFresh:" + mIsFresh);
if (!mIsFresh) {
// TODO:
// Show a Toast Notification to inform user that
// the app is "Downloading Tweets from Network"
log ("Issuing Toast Message");
Toast.makeText(getApplicationContext(), "refreshing Tweets",Toast.LENGTH_LONG).show();
// TODO:
// Start new AsyncTask to download Tweets from network
new DownloaderTask(MainActivity.this).execute(MainActivity.URL_LGAGA,MainActivity.URL_RBLACK,MainActivity.URL_TSWIFT);
// Set up a BroadcastReceiver to receive an Intent when download
// finishes.
mRefreshReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
log("BroadcastIntent received in MainActivity");
// TODO:
// Check to make sure this is an ordered broadcast
// Let sender know that the Intent was received
// by setting result code to RESULT_OK
sendOrderedBroadcast(new Intent(), null, null, null, RESULT_OK, null, null);
}
};
} else {
loadTweetsFromFile();
parseJSON();
updateFeed();
}
}
// Called when new Tweets have been downloaded
public void setRefreshed(String[] feeds) {
mRawFeeds[0] = feeds[0];
mRawFeeds[1] = feeds[1];
mRawFeeds[2] = feeds[2];
parseJSON();
updateFeed();
mIsFresh = true;
};
// Called when a Friend is clicked on
@Override
public void onItemSelected(int position) {
mFeedSelected = position;
mFeedFragment = addFeedFragment();
if (mIsFresh) {
updateFeed();
}
}
// Calls FeedFragement.update, passing in the
// the tweets for the currently selected friend
void updateFeed() {
if (null != mFeedFragment)
mFeedFragment.update(mProcessedFeeds[mFeedSelected]);
}
// Add FeedFragment to Activity
private FeedFragment addFeedFragment() {
FeedFragment feedFragment;
feedFragment = new FeedFragment();
FragmentTransaction transaction = mFragmentManager.beginTransaction();
transaction.replace(R.id.fragment_container, feedFragment);
transaction.addToBackStack(null);
transaction.commit();
mFragmentManager.executePendingTransactions();
return feedFragment;
}
// Register the BroadcastReceiver
@Override
protected void onResume() {
super.onResume();
// TODO:
// Register the BroadcastReceiver to receive a
// DATA_REFRESHED_ACTION broadcast
IntentFilter intentFilter = new IntentFilter(DATA_REFRESHED_ACTION);
registerReceiver(mRefreshReceiver, intentFilter);
}
@Override
protected void onPause() {
// TODO:
// Unregister the BroadcastReceiver
unregisterReceiver(mRefreshReceiver);
super.onPause();
}
// Convert raw Tweet data (in JSON format) into text for display
public void parseJSON() {
JSONArray[] JSONFeeds = new JSONArray[NUM_FRIENDS];
for (int i = 0; i < NUM_FRIENDS; i++) {
try {
JSONFeeds[i] = new JSONArray(mRawFeeds[i]);
} catch (JSONException e) {
e.printStackTrace();
}
String name = "";
String tweet = "";
JSONArray tmp = JSONFeeds[i];
// string buffer for twitter feeds
StringBuffer tweetRec = new StringBuffer("");
for (int j = 0; j < tmp.length(); j++) {
try {
tweet = tmp.getJSONObject(j).getString("text");
JSONObject user = (JSONObject) tmp.getJSONObject(j).get(
"user");
name = user.getString("name");
} catch (JSONException e) {
e.printStackTrace();
}
tweetRec.append(name + " - " + tweet + "\n\n");
}
mProcessedFeeds[i] = tweetRec.toString();
}
}
// Retrieve feeds text from a file
// Store them in mRawTextFeed[]
private void loadTweetsFromFile() {
BufferedReader reader = null;
try {
FileInputStream fis = openFileInput(TWEET_FILENAME);
reader = new BufferedReader(new InputStreamReader(fis));
String s = null;
int i = 0;
while (null != (s = reader.readLine()) && i < NUM_FRIENDS) {
mRawFeeds[i] = s;
i++;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (null != reader) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
// Simplified log output method
private void log(String msg) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
Log.i(TAG, msg);
}
}
나는 무엇이 잘못 되었습니까? 이 응용 프로그램은 세 사람의 트위터 피드를 표시하기로되어 있습니다. 첫 번째 사용자는 트윗이 다운로드되는 메시지 만 표시하지만 첫 번째 사용자의 트위터 피드는 표시하지 않으며 앱은이 시점을지나 실행되고 두 번째 사람이 피드를 표시합니다. 나열된 스택 추적을 던지거나 첫 번째 사람보기가 표시되지 않은 스택 추적 오류를 표시합니다 (피드는 텍스트 파일에 저장되고 androidManifest.xml에 선언됩니다. 에뮬레이터는 실제로 웹에 연결할 수 없기 때문입니다). 사전에 작성 및 강사에 의해 매니 페스트에 선언 그래서 문제는 그 중 거짓말을 믿지 않아요, 나는 자바 프로그래밍에 익숙하지 않습니다 그리고 나는 아주 잘 정통하지 그래서 나는 어딘가에 그것을 망쳐 놓을거야 두 번째 .class 파일에서.
태그가있는 LogCat은 다음과 같습니다. android 런타임 용으로 치명적인 오류를 참조한 것이므로 새 번호로 어디에서 줄 번호를 찾지 못했습니다.
02-16 17:11:06.606: D/AndroidRuntime(5278): Shutting down VM
02-16 17:11:06.704: E/AndroidRuntime(5278): FATAL EXCEPTION: main
02-16 17:11:06.704: E/AndroidRuntime(5278): java.lang.RuntimeException: Unable to pause activity {course.labs.notificationslab/course.labs.notificationslab.MainActivity}: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3064)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3019)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2997)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.access$800(ActivityThread.java:141)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1273)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.os.Handler.dispatchMessage(Handler.java:99)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.os.Looper.loop(Looper.java:137)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.main(ActivityThread.java:5103)
02-16 17:11:06.704: E/AndroidRuntime(5278): at java.lang.reflect.Method.invokeNative(Native Method)
02-16 17:11:06.704: E/AndroidRuntime(5278): at java.lang.reflect.Method.invoke(Method.java:525)
02-16 17:11:06.704: E/AndroidRuntime(5278): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-16 17:11:06.704: E/AndroidRuntime(5278): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-16 17:11:06.704: E/AndroidRuntime(5278): at dalvik.system.NativeStart.main(Native Method)
02-16 17:11:06.704: E/AndroidRuntime(5278): Caused by: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:662)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1372)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:468)
02-16 17:11:06.704: E/AndroidRuntime(5278): at course.labs.notificationslab.MainActivity.onPause(MainActivity.java:196)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.Activity.performPause(Activity.java:5235)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1233)
02-16 17:11:06.704: E/AndroidRuntime(5278): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3050)
02-16 17:11:06.704: E/AndroidRuntime(5278): ... 12 more
02-16 17:15:19.514: D/AndroidRuntime(5361): Shutting down VM
02-16 17:15:19.646: E/AndroidRuntime(5361): FATAL EXCEPTION: main
02-16 17:15:19.646: E/AndroidRuntime(5361): java.lang.RuntimeException: Unable to pause activity {course.labs.notificationslab/course.labs.notificationslab.MainActivity}: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3064)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3019)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2997)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.access$800(ActivityThread.java:141)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1273)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.os.Handler.dispatchMessage(Handler.java:99)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.os.Looper.loop(Looper.java:137)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.main(ActivityThread.java:5103)
02-16 17:15:19.646: E/AndroidRuntime(5361): at java.lang.reflect.Method.invokeNative(Native Method)
02-16 17:15:19.646: E/AndroidRuntime(5361): at java.lang.reflect.Method.invoke(Method.java:525)
02-16 17:15:19.646: E/AndroidRuntime(5361): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-16 17:15:19.646: E/AndroidRuntime(5361): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-16 17:15:19.646: E/AndroidRuntime(5361): at dalvik.system.NativeStart.main(Native Method)
02-16 17:15:19.646: E/AndroidRuntime(5361): Caused by: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:662)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1372)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:468)
02-16 17:15:19.646: E/AndroidRuntime(5361): at course.labs.notificationslab.MainActivity.onPause(MainActivity.java:196)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.Activity.performPause(Activity.java:5235)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1233)
02-16 17:15:19.646: E/AndroidRuntime(5361): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3050)
02-16 17:15:19.646: E/AndroidRuntime(5361): ... 12 more
02-16 17:49:19.994: D/AndroidRuntime(5451): Shutting down VM
02-16 17:49:20.104: E/AndroidRuntime(5451): FATAL EXCEPTION: main
02-16 17:49:20.104: E/AndroidRuntime(5451): java.lang.RuntimeException: Unable to pause activity {course.labs.notificationslab/course.labs.notificationslab.MainActivity}: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3064)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3019)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:2997)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.access$800(ActivityThread.java:141)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1273)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.os.Handler.dispatchMessage(Handler.java:99)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.os.Looper.loop(Looper.java:137)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.main(ActivityThread.java:5103)
02-16 17:49:20.104: E/AndroidRuntime(5451): at java.lang.reflect.Method.invokeNative(Native Method)
02-16 17:49:20.104: E/AndroidRuntime(5451): at java.lang.reflect.Method.invoke(Method.java:525)
02-16 17:49:20.104: E/AndroidRuntime(5451): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
02-16 17:49:20.104: E/AndroidRuntime(5451): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-16 17:49:20.104: E/AndroidRuntime(5451): at dalvik.system.NativeStart.main(Native Method)
02-16 17:49:20.104: E/AndroidRuntime(5451): Caused by: java.lang.IllegalArgumentException: Receiver not registered: null
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.LoadedApk.forgetReceiverDispatcher(LoadedApk.java:662)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ContextImpl.unregisterReceiver(ContextImpl.java:1372)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.content.ContextWrapper.unregisterReceiver(ContextWrapper.java:468)
02-16 17:49:20.104: E/AndroidRuntime(5451): at course.labs.notificationslab.MainActivity.onPause(MainActivity.java:196)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.Activity.performPause(Activity.java:5235)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1233)
02-16 17:49:20.104: E/AndroidRuntime(5451): at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3050)
02-16 17:49:20.104: E/AndroidRuntime(5451): ... 12 more
ption, 그 라인을 가리키고 있는지 확인하십시오. – user2450263