我正在使用Android Studio开发我的第一个应用。在我的4.4.4设备上，我可以启动MainActivity但是当我点击导航到另一个活动的屏幕上的某些内容时，应用程序崩溃了。它只在我的一台设备上崩溃，并且在运行4.4.2的Note 2以及运行4.4.2和5.0的两个模拟器上运行良好。
我尝试将几个免费的LogCat应用程序下载到我的设备上，但没有一个能够正常运行。否则，我无法在计算机上查看任何类型的LogCat消息，因为我无法下载三星的设备驱动程序（不断超时）。两个模拟器都没有崩溃，但是它们会给出OpenGL错误。
以下是我的MainActivity，如果还不够，则完整代码为here。
public class MainActivity extends Activity {
SharedPreferences firstCheck,
spPointValue,
spNotifications,
spSpreadsheets;
SharedPreferences.Editor editor;
final int initialPointValue = 15;
int screenWidth, screenHeight;
static final String prefsPointValueName = "userPointValue",
prefsNotificationToggle = "notificationToggle",
prefsSpreadsheets = "spreadsheets",
directionsURI = "geo:0,0?q=11000+Beach+Blvd+Jacksonville+Fl+32246",
facebookURL = "https://www.facebook.com/ComedyClubOfJacksonville",
twitterURL = "https://twitter.com/comedyclubofjax",
showSpreadsheetURL = "https://docs.google.com/spreadsheets/d/1Ax2-gUY33i_pRHZIwR8AULy6-nbnAbM8Qm5-CGISevc/gviz/tq",
dealsSpreadsheetURL = "https://docs.google.com/spreadsheets/d/1dnpODnbz6ME4RY5vNwrtAc6as3-uj2rK_IgtYszsvsM/gviz/tq";
Intent browserIntent, alarmIntent/*, updateIntent*/;
MyAdapter adapter;
ListView listView;
ConnectivityManager connMgr;
NetworkInfo networkInfo;
ArrayList<Show> shows;
ArrayList<Offer> offers;
DateFormat df;
Date today;
java.util.Calendar calendar, updateCalendar;
AlarmManager alarmManager, updateAlarmManager;
PendingIntent pendingIntent, updatePendingIntent;
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
System.out.println("onCreate called");
declarations();
addMenuButtonFunctionality();
setListViewAdapter();
checkFirstRun();
checkForPastShows();
}//end onCreate
public void declarations() {
ActivityManager manager = new ActivityManager(this);
manager.manageActionBar(getActionBar());
manager.scaleBackground((LinearLayout) findViewById(R.id.linearLayoutMain), R.drawable.background);
manager.scaleImage((ImageView) findViewById(R.id.ivLogo), R.drawable.comedyclublogo2, 1, .5);
firstCheck = PreferenceManager.getDefaultSharedPreferences(this);
shows = new ArrayList<>();
offers = new ArrayList<>();
spSpreadsheets = getSharedPreferences(prefsSpreadsheets, MODE_PRIVATE);
/*
creates the ListView adapter and populates the ListView using generateData()
*/
adapter = new MyAdapter(this, generateData());
listView = (ListView) findViewById(R.id.listview);
/*
simpledateformat used to compare dates from spreadsheet
to current date
*/
df = new SimpleDateFormat("MM/dd/yyyy", Locale.US);
today = new Date();
today.setTime(System.currentTimeMillis() - 1000 * 60 * 60 * 24);
spNotifications = getSharedPreferences(prefsNotificationToggle, MODE_PRIVATE);
/*
alarmmanager and notification declarations
*/
alarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
alarmIntent = new Intent(this, AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(this, 0, alarmIntent, PendingIntent.FLAG_CANCEL_CURRENT);
calendar = java.util.Calendar.getInstance();
/*
updateAlarmManager = (AlarmManager) this.getSystemService(Context.ALARM_SERVICE);
updateIntent = new Intent(MainActivity.this, Update.class);
updatePendingIntent = PendingIntent.getBroadcast(MainActivity.this, 0, updateIntent, PendingIntent.FLAG_CANCEL_CURRENT);
updateCalendar = java.util.Calendar.getInstance();
*/
}//end declarations
public void manageNotifications() {
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.set(java.util.Calendar.DAY_OF_WEEK, java.util.Calendar.FRIDAY);
calendar.set(java.util.Calendar.HOUR_OF_DAY, 8);
calendar.set(java.util.Calendar.MINUTE, 15);
/*
sets alarm manager to go off at 8:15 in the morning every 7 days on Thursday
for testing, starts at 815 every morning starting wednesday
*/
alarmManager.setInexactRepeating(AlarmManager.RTC, calendar.getTimeInMillis(), 1000 * 60 * 60 * 24/*1000 * 60 * 60 * 24 * 7*/, pendingIntent);
}//end manageNotifications
public void updateSpreadsheets() {
/*
not currently being used, will revisit later.
*/
updateCalendar.setTimeInMillis(System.currentTimeMillis());
updateCalendar.set(java.util.Calendar.HOUR_OF_DAY, 0);
updateCalendar.set(java.util.Calendar.MINUTE, 0);
updateAlarmManager.setInexactRepeating(AlarmManager.RTC_WAKEUP, updateCalendar.getTimeInMillis(), 1000 * 60 * 60 * 24, updatePendingIntent);
}//end updateSpreadsheets
public void checkForPastShows() {
try {
for (int i = 0; i < shows.size(); i++) {
if (today.after(df.parse(shows.get(i).getShowDate())))
shows.remove(i);
for (int j = 0; j < shows.size(); j++) {
if (shows.get(i).equals(shows.get(j)) && i != j)
shows.remove(j);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void setListViewAdapter() {
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapter, View v, int position, long arg3) {
switch (position) {
case 0://this weekend
if (!shows.isEmpty())
startActivity(new Intent(MainActivity.this, ThisWeekend.class).putParcelableArrayListExtra("shows", shows));
else {
getShows();
startActivity(new Intent(MainActivity.this, Calendar.class).putParcelableArrayListExtra("shows", shows));
}
System.out.println("this weekend clicked");
break;
case 1://calendar
if (!shows.isEmpty())
startActivity(new Intent(MainActivity.this, Calendar.class).putParcelableArrayListExtra("shows", shows));
else {
getShows();
startActivity(new Intent(MainActivity.this, Calendar.class).putParcelableArrayListExtra("shows", shows));
}
System.out.println("calendar clicked");
break;
case 2://rewards and offers
if (!offers.isEmpty())
startActivity(new Intent(MainActivity.this, Deals.class).putParcelableArrayListExtra("offers", offers));
else {
getDeals();
startActivity(new Intent(MainActivity.this, Deals.class).putParcelableArrayListExtra("offers", offers));
}
System.out.println("deals clicked");
break;
case 3://food and drink
startActivity(new Intent(MainActivity.this, FoodAndDrink.class));
System.out.println("food and drink clicked");
break;
case 4://groups and parties
startActivity(new Intent(MainActivity.this, GroupsAndParties.class).putParcelableArrayListExtra("shows", shows));
System.out.println("groups and parties clicked");
break;
}
}
});
}//end setListViewAdapter
public void checkFirstRun() {
/*
first run check. If first run, sets reward point value to 15, sets notifications
to true, manages notifications.
*/
getShows();
getDeals();
if (!firstCheck.getBoolean("firstRun", false)) {
spPointValue = getSharedPreferences(prefsPointValueName, MODE_MULTI_PROCESS);
editor = spPointValue.edit();
editor.putInt("pointValue", initialPointValue);
editor.apply();
editor = spNotifications.edit();
editor.putBoolean("notifications", true);
editor.apply();
editor = firstCheck.edit();
editor.putBoolean("firstRun", true);
editor.apply();
manageNotifications();
//updateSpreadsheets();
} else {
try {
processShowsJson(new JSONObject(spSpreadsheets.getString("showsSpreadsheet", "")));
processDealsJson(new JSONObject(spSpreadsheets.getString("dealsSpreadsheet", "")));
} catch (Exception e) {
e.printStackTrace();
}
}
}//end checkFirstRun
private ArrayList<Model> generateData() {
/*
populates the ListView on activity_main.xml with an icon and title.
*/
ArrayList<Model> models = new ArrayList<>();
models.add(new Model(R.drawable.ic_action_event, "This Weekend"));
models.add(new Model(R.drawable.ic_action_go_to_today, "Upcoming Shows"));
models.add(new Model(R.drawable.ic_action_important_gold, "Rewards and Offers"));
models.add(new Model(R.drawable.ic_action_view_as_list, "Food and Drinks"));
models.add(new Model(R.drawable.ic_action_group, "Groups and Parties"));
return models;
}
public void addMenuButtonFunctionality() {
/*
enables overflow menu icon, even with presence of hardware menu key
*/
try {
ViewConfiguration config = ViewConfiguration.get(this);
Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
if (menuKeyField != null) {
menuKeyField.setAccessible(true);
menuKeyField.setBoolean(config, false);
}
} catch (Exception e) {
// presumably, not relevant
}
}
@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) {
System.out.println("onOptionsItemSelected called");
int id = item.getItemId();
switch (id) {
case R.id.action_settings:
startActivity(new Intent(MainActivity.this, Settings.class));
System.out.println("settings clicked");
return true;
case R.id.action_directions:
Intent directionsIntent = new Intent(Intent.ACTION_VIEW).setData(Uri.parse(directionsURI));
if (directionsIntent.resolveActivity(getPackageManager()) != null) {
startActivity(directionsIntent);
}
System.out.println("directions clicked");
return true;
case R.id.action_about_us:
startActivity(new Intent(MainActivity.this, AboutUs.class));
System.out.println("about us clicked");
return true;
case R.id.action_contact:
startActivity(new Intent(MainActivity.this, Contact.class));
System.out.println("contact clicked");
return true;
case R.id.action_now_hiring:
startActivity(new Intent(MainActivity.this, NowHiring.class));
System.out.println("now hiring clicked");
return true;
case R.id.action_report_a_bug:
startActivity(new Intent(MainActivity.this, ReportABug.class));
System.out.println("report a bug clicked");
default:
return super.onOptionsItemSelected(item);
}
}//end onOptionsItemSelected
public void onFacebookClick(View view) {
/*
handles the click method for the facebook button. opens an internet intent for the
comedy club facebook.
*/
browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(facebookURL));
startActivity(browserIntent);
}//onFacebookClick
public void onTwitterClick(View view) {
/*
handles the click method for the twitter button. opens an internet intent for the
comedy club twitter.
*/
browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(twitterURL));
startActivity(browserIntent);
}//end onTwitterClick
public void getShows() {
connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
networkInfo = connMgr.getActiveNetworkInfo();
try {
if (networkInfo != null && networkInfo.isConnected()) {
new DownloadWebpageTask(this, new AsyncResult() {
@Override
public void onResult(JSONObject object) {
if (!object.toString().equals(spSpreadsheets.getString("showsSpreadsheet", ""))) {
System.out.println("shows spreadsheet is the same");
processShowsJson(object);
editor = spSpreadsheets.edit();
editor.putString("showsSpreadsheet", object.toString());
editor.apply();
}
}
}).execute(showSpreadsheetURL);
} else {
Toast.makeText(this, "Network not available.", Toast.LENGTH_SHORT).show();
System.out.println("Network info not available.");
}
} catch (Exception e) {
e.printStackTrace();
}
}//end getShows
public void getDeals() {
connMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
networkInfo = connMgr.getActiveNetworkInfo();
try {
if (networkInfo != null && networkInfo.isConnected()) {
new DownloadWebpageTask(this, new AsyncResult() {
@Override
public void onResult(JSONObject object) {
if (!object.toString().equals(spSpreadsheets.getString("dealsSpreadsheet", ""))) {
System.out.println("deals spreadsheet is the same");
processDealsJson(object);
editor = spSpreadsheets.edit();
editor.putString("dealsSpreadsheet", object.toString());
editor.apply();
}
}
}).execute(dealsSpreadsheetURL);
} else {
Toast.makeText(this, "Network not available.", Toast.LENGTH_SHORT).show();
System.out.println("Network info not available.");
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void processShowsJson(JSONObject object) {
try {
JSONArray rows = object.getJSONArray("rows");
for (int i = 0; i < rows.length(); ++i) {
JSONObject row = rows.getJSONObject(i);
JSONArray columns = row.getJSONArray("c");
String showDate = columns.getJSONObject(0).getString("v");
int showTime = columns.getJSONObject(1).getInt("v");
String comedian = columns.getJSONObject(2).getString("v");
String description = columns.getJSONObject(3).getString("v");
String videoURL = columns.getJSONObject(4).getString("v");
Show show = new Show(comedian, description, showDate, showTime, videoURL);
shows.add(show);
}
} catch (JSONException e) {
e.printStackTrace();
}
}//end processShowsJson
private void processDealsJson(JSONObject object) {
try {
JSONArray rows = object.getJSONArray("rows");
for (int i = 0; i < rows.length(); ++i) {
JSONObject row = rows.getJSONObject(i);
JSONArray columns = row.getJSONArray("c");
String offerTitle = columns.getJSONObject(0).getString("v");
String offerDescription = columns.getJSONObject(1).getString("v");
int pointValue = columns.getJSONObject(2).getInt("v");
Offer offer = new Offer(pointValue, offerTitle, offerDescription);
offers.add(offer);
}
} catch (JSONException e) {
e.printStackTrace();
}
}//end processDealsJson
}