layout id cannot be resolved or is not a field
1.) check your xml files in res/layout folder if contain errors or warnings, repair this
2.) try comment import R in Activity file
// import com.mysite.packagename.R;
3.) every clean and rebuild project
2.) try comment import R in Activity file
// import com.mysite.packagename.R;
3.) every clean and rebuild project
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Brand | Samsung |
Model (codename) | i9250 Galaxy Nexus |
Cena, včetně DPH | 9000 |
Veikost Displaye v palcích | 4.65 |
Display-resolution | 1280x720 |
Dotek-typ | kapacitní |
CPU typ | |
CPU MHz | 1200 |
CPU core | 2 |
L2 cache | |
RAM | 1 GB |
ROM | 16 - 32 GB |
GPU | TI OMAP 4460 1,2 GHz dual-core |
NenaMark2 Benchmark | |
GPU-GLBenchmark | |
Baterie mAh | 1750 |
Foto MPx | 5 |
Autofocus | yes |
Video | 480p - 30 frames/s |
Official Android ICS | Android 4.0 Ice Cream Sandwich |
CyanogenMod support | |
Dotek-prstů-max | |
Display-ppi | |
Display-retina | |
Network | GSM&EDGE: 850 / 900 / 1.800 / 1.900 |
Connectivity | |
Pozn. |
samsung-i9250-galaxy-nexus image

If you change the package name, you have to add new package name in:
DictionaryProvider.java
Do not forget change package name in all java class and xml/searchable.xml
In my project I changed like this:
DictionaryProvider.java
public class DictionaryProvider extends ContentProvider {
String TAG = "DictionaryProvider";
// public static String AUTHORITY = "com.example.android.searchabledict.DictionaryProvider";
// change to your new package name
public static String AUTHORITY = "com.myweb.mysubdomen.searchabledict.DictionaryProvider";
public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/dictionary");
// in AndroidManifest.xml
//change com.example.android to your package e.g. com.myweb.mysubdomen
<!-- Provides search suggestions for words and their definitions. -->
<provider android:name="com.example.android.searchabledict.DictionaryProvider"
android:configChanges="keyboard|keyboardHidden|orientation"
android:authorities="com.example.android.searchabledict.DictionaryProvider" />
<!-- Points to searchable activity so the whole app can invoke search. -->
<meta-data android:name="android.app.default_searchable"
android:configChanges="keyboard|keyboardHidden|orientation"
android:value=".SearchableDictionary" />
// I change like this:
<!-- Provides search suggestions for words and their definitions. -->
<provider android:name=".DictionaryProvider"
android:configChanges="keyboard|keyboardHidden|orientation"
android:authorities="cz.okhelp.android.searchabledict.DictionaryProvider" />
<!-- Points to searchable activity so the whole app can invoke search. -->
<meta-data android:name="android.app.default_searchable"
android:configChanges="keyboard|keyboardHidden|orientation"
android:value=".SearchableDictionary" />
Do not forget change package name in all java class and xml/searchable.xml
In my project I changed like this:
<searchable xmlns:android="//schemas.android.com/apk/res/android"
android:label="@string/search_label"
android:hint="@string/search_hint"
android:searchSettingsDescription="@string/settings_description"
android:searchSuggestAuthority="cz.okhelp.android.searchabledict.DictionaryProvider"
android:searchSuggestIntentAction="android.intent.action.VIEW"
android:searchSuggestIntentData="content://cz.okhelp.android.searchabledict.DictionaryProvider/dictionary"
android:searchSuggestSelection=" ?"
android:searchSuggestThreshold="1"
android:includeInGlobalSearch="true"
>
</searchable>
Update TextView from TimerTask, Handler, schedule, run, cancel TimerTask, Android example
public class TimerActivity extends Activity {
TimerTask mTimerTask;
final Handler handler = new Handler();
Timer t = new Timer();
TextView hTextView;
TableRow hTableRow;
Button hButton, hButtonStop;
private int nCounter = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
hTextView = (TextView)findViewById(R.id.idTextView);
hButton = (Button)findViewById(R.id.idButton);
hButton.setOnClickListener(mButtonStartListener);
hButtonStop = (Button)findViewById(R.id.idButtonStop);
hButtonStop.setOnClickListener(mButtonStopListener);
} // end onCreate
View.OnClickListener mButtonStartListener = new OnClickListener() {
public void onClick(View v) {
doTimerTask();
}
};
View.OnClickListener mButtonStopListener = new OnClickListener() {
public void onClick(View v) {
stopTask();
}
};
public void doTimerTask(){
mTimerTask = new TimerTask() {
public void run() {
handler.post(new Runnable() {
public void run() {
nCounter++;
// update TextView
hTextView.setText("Timer: " + nCounter);
Log.d("TIMER", "TimerTask run");
}
});
}};
// public void schedule (TimerTask task, long delay, long period)
t.schedule(mTimerTask, 500, 3000); //
}
public void stopTask(){
if(mTimerTask!=null){
hTextView.setText("Timer canceled: " + nCounter);
Log.d("TIMER", "timer canceled");
mTimerTask.cancel();
}
}
}
Check
- is sett debug mode on device?
- enabled debugging over USB?
- is device right connected?
- have you downloaded and instaled drivers for your device on PC?
- For Windows //developer.android.com/sdk/win-usb.html
- try disconnect and connect USB cable
- try do restart Android Studio
Use this code for example in some method or function
// public Object getSystemService (String name)
// Return the handle to a system-level service by name.
// The class of the returned object varies by the requested name.
InputMethodManager inputMethodManager = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
//public boolean hideSoftInputFromWindow (IBinder windowToken, int flags)
//EditText myEdit = (EditText)findViewById(R.id.idEditText);
inputMethodManager .hideSoftInputFromWindow(myEdit.getWindowToken(), 0);
Editace: 2015-02-05 11:08:56
Počet článků v kategorii: 396
Url:layout-id-cannot-be-resolved-or-is-not-a-field