如何解决Android Studio中的“'捕获'或'最终'预期”错误？？
public class FragmentRecent extends Fragment {
View root_view, parent_view;
private RecyclerView recyclerView;
private AdapterChannel adapterChannel;
private SwipeRefreshLayout swipeRefreshLayout;
private Call<CallbackChannel> callbackCall = null;
private int post_total = 0;
private int failed_page = 0;
private InterstitialAd interstitialAd;
private OfflineDatabase databaseHelper;
int counter = 3;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
root_view = inflater.inflate(R.layout.fragment_recent, null);
parent_view = getActivity().findViewById(R.id.main_content);
loadInterstitialAd();
swipeRefreshLayout = (SwipeRefreshLayout) root_view.findViewById(R.id.swipe_refresh_layout_home);
swipeRefreshLayout.setColorSchemeResources(R.color.orange, R.color.green, R.color.blue, R.color.red);
recyclerView = (RecyclerView) root_view.findViewById(R.id.recyclerViewHome);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.setHasFixedSize(true);
//set data and list adapter
adapterChannel = new AdapterChannel(getActivity(), recyclerView, new ArrayList<Channel>());
recyclerView.setAdapter(adapterChannel);
// on item list clicked
adapterChannel.setOnItemClickListener(new AdapterChannel.OnItemClickListener() {
@Override
public void onItemClick(View v, Channel obj, int position) {
Intent intent = new Intent(getActivity(), ActivityDetailChannel.class);
intent.putExtra(Constant.KEY_CHANNEL_CATEGORY, obj.category_name);
intent.putExtra(Constant.KEY_CHANNEL_ID, obj.channel_id);
intent.putExtra(Constant.KEY_CHANNEL_NAME, obj.channel_name);
intent.putExtra(Constant.KEY_CHANNEL_IMAGE, obj.channel_image);
intent.putExtra(Constant.KEY_CHANNEL_URL, obj.channel_url);
intent.putExtra(Constant.KEY_CHANNEL_DESCRIPTION, obj.channel_description);
startActivity(intent);
showInterstitialAd();
}
});
// detect when scroll reach bottom
adapterChannel.setOnLoadMoreListener(new AdapterChannel.OnLoadMoreListener() {
@Override
public void onLoadMore(int current_page) {
if (post_total > adapterChannel.getItemCount() && current_page != 0) {
int next_page = current_page + 1;
requestAction(next_page);
} else {
adapterChannel.setLoaded();
}
}
});
// on swipe list
swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
if (callbackCall != null && callbackCall.isExecuted()) callbackCall.cancel();
adapterChannel.resetListData();
requestAction(1);
}
});
requestAction(1);
return root_view;
}
private void displayApiResult(final List<Channel> channels) {
adapterChannel.insertData(channels);
swipeProgress(false);
if (channels.size() == 0) {
showNoItemView(true);
}
}
private void requestListPostApi(final int page_no) {
ApiInterface apiInterface = RestAdapter.createAPI();
callbackCall = apiInterface.getPostByPage(page_no, Config.LOAD_MORE);
callbackCall.enqueue(new Callback<CallbackChannel>() {
@Override
public void onResponse(Call<CallbackChannel> call, Response<CallbackChannel> response) {
CallbackChannel resp = response.body();
if (resp != null && resp.status.equals("ok")) {
post_total = resp.count_total;
displayApiResult(resp.posts);
} else {
onFailRequest(page_no);
}
}
@Override
public void onFailure(Call<CallbackChannel> call, Throwable t) {
if (!call.isCanceled()) onFailRequest(page_no);
}
});
}
private void onFailRequest(int page_no) {
failed_page = page_no;
adapterChannel.setLoaded();
swipeProgress(false);
if (NetworkCheck.isConnect(getActivity())) {
} else {
//showToast("Internet Not");
if (databaseHelper.getOfflineData("FragmentCategory").length() != 0) {
setJson(databaseHelper.getOfflineData("FragmentCategory"), false);
}
}
}
//databaseHelper.removeAll();
private void requestAction(final int page_no) {
showFailedView(false, "");
showNoItemView(false);
if (page_no == 1) {
swipeProgress(true);
} else {
adapterChannel.setLoading();
}
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
requestListPostApi(page_no);
}
}, Constant.DELAY_TIME);
}
@Override
public void onDestroy() {
super.onDestroy();
swipeProgress(false);
if (callbackCall != null && callbackCall.isExecuted()) {
callbackCall.cancel();
}
}
private void showFailedView(boolean show, String message) {
View lyt_failed = (View) root_view.findViewById(R.id.lyt_failed_home);
((TextView) root_view.findViewById(R.id.failed_message)).setText(message);
if (show) {
recyclerView.setVisibility(View.GONE);
lyt_failed.setVisibility(View.VISIBLE);
} else {
recyclerView.setVisibility(View.VISIBLE);
lyt_failed.setVisibility(View.GONE);
}
((Button) root_view.findViewById(R.id.failed_retry)).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
requestAction(failed_page);
}
});
}
private void showNoItemView(boolean show) {
View lyt_no_item = (View) root_view.findViewById(R.id.lyt_no_item_home);
((TextView) root_view.findViewById(R.id.no_item_message)).setText(R.string.no_post_found);
if (show) {
recyclerView.setVisibility(View.GONE);
lyt_no_item.setVisibility(View.VISIBLE);
} else {
recyclerView.setVisibility(View.VISIBLE);
lyt_no_item.setVisibility(View.GONE);
}
}
private void swipeProgress(final boolean show) {
if (!show) {
swipeRefreshLayout.setRefreshing(show);
return;
}
swipeRefreshLayout.post(new Runnable() {
@Override
public void run() {
swipeRefreshLayout.setRefreshing(show);
}
});
}
public void setJson(String result, Boolean isOnline) {
try {
//inseting result to database
if(isOnline) {
ContentValues offline_data = new ContentValues();
offline_data.put(OfflineDatabase.KEY_OFFLINE_DATA, result);
if(databaseHelper.getOfflineData("FragmentCategory").length()!=0) {
databaseHelper.update("FragmentCategory",offline_data);
} else {
offline_data.put(OfflineDatabase.KEY_ACTIVITY_NAME, "FragmentCategory");
databaseHelper.addOfflineData(offline_data, null);
//handle both exceptions
}
}}}
private void loadInterstitialAd() {
if (Config.ENABLE_ADMOB_INTERSTITIAL_ADS) {
interstitialAd = new InterstitialAd(getActivity());
interstitialAd.setAdUnitId(getResources().getString(R.string.admob_interstitial_unit_id));
interstitialAd.loadAd(new AdRequest.Builder().build());
interstitialAd.setAdListener(new AdListener() {
@Override
public void onAdClosed() {
interstitialAd.loadAd(new AdRequest.Builder().build());
}
});
} else {
Log.d("AdMob", "AdMob Interstitial is Enabled");
}
}
private void showInterstitialAd() {
if (Config.ENABLE_ADMOB_INTERSTITIAL_ADS) {
if (interstitialAd != null && interstitialAd.isLoaded()) {
if (counter == Config.ADMOB_INTERSTITIAL_ADS_INTERVAL) {
interstitialAd.show();
counter = 1;
} else {
counter++;
}
} else {
Log.d("AdMob", "Interstitial Ad is Disabled");
}
} else {
Log.d("AdMob", "AdMob Interstitial is Disabled");
}
}}
答案 0 :(得分：0)
从public static void waitVisibilityOfElementLocated(WebDriver driver, String locator) {
String key = "";
WebElement element = null;
try {
key = Utility.fetchLocatorKey(locator);
} catch (Exception e) {
System.out.println("Exception in getText method, " + e.getMessage());
}
if (key.endsWith("id")) {
WebDriverWait wait = new WebDriverWait(driver, 60);
element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.id(locator)));
} else if (key.endsWith("cssselector")) {
WebDriverWait wait = new WebDriverWait(driver, 60);
element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.cssSelector(locator)));
} else if (key.endsWith("linktext")) {
WebDriverWait wait = new WebDriverWait(driver, 60);
element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.linkText(locator)));
} else if (key.endsWith("xpath")) {
WebDriverWait wait = new WebDriverWait(driver, 60);
element = wait.until(ExpectedConditions.visibilityOfElementLocated(By.xpath(locator)));
}
}
开始：
try必须继续：
public void setJson(String result, Boolean isOnline) {
try {
...
}
...
}
try {
...
} catch(Exception e) {
} finally {
}
或 catch是可选的（取决于finally的处理位置）。