Delete Canvas - Fill Canvas Android example
Fill the entire canvas with the specified color.
@Override
public void onDraw(Canvas canvas) {
canvas.drawColor(Color.GREEN);
}
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Android app setup preferences, settings, open, read, write, onStop(), onPause(), getSharedPreferences(), SharedPreferences.Editor getInt(), getBoolean(), getString() , putInt(), putString(), putBoolean() example source code.
import android.content.SharedPreferences;
public class MainClass extends Activity {
public static final String PREFERENCES_NAME = "MyPrefsFile";
String myNewString;
int myNewInt;
Boolean myNewBool;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// read old settings if exist
SharedPreferences settings = getSharedPreferences(PREFERENCES_NAME, 0);
String sDefault = "Hello!";
String sStringFromPrefFile = settings.getString("myString", sDefault); // new text or default Hello!
int nDefaultIndex = 2; //
int nIndexFromPrefFile = settings.getInt("myInt", nDefaultIndex); // 4 or default 2
Boolean bDefault = false;
Boolean bFromPrefFile = settings.getBoolean("silentMode", bDefault); // true or default false
// new settings will saved in onStop or onPause
myNewString = "new text";
myNewInt = 4;
myNewBool = true;
}
@Override
protected void onPause() {
super.onPause();
Toast.makeText(getApplicationContext(), "onPause "
, Toast.LENGTH_SHORT).show();
savePreferences();
}
@Override
protected void onStop() {
super.onStop();
savePreferences();
}
/**save settings*/
public void savePreferences(){
try {
SharedPreferences settings = getSharedPreferences(PREFERENCES_NAME, 0);
SharedPreferences.Editor editor = settings.edit();
editor.putString("myString", myNewString);
editor.putInt("nMyInt", myNewInt);
editor.putBoolean("silentMode", myNewBool); //
editor.commit();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
Try this solution:
String DATA = "Html text....bla bla bla. Hellou world! čšřžěéá";
String HEADERHTML =
"<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">"
+"<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8">"
+"</head> <body>";
String FOOTERHTML = "</body></html>";
WebView mWebView.loadData(HEADERHTML+DATA+FOOTERHTML,"text/html; charset=UTF-8",null);
Android development example source code
Get supported language:
// import
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
// you have to add implementation
public class Main extends Activity implements TextToSpeech.OnInitListener {
private int _langTTSavailable = -1; // set up in onInit method
// declaration
private TextToSpeech mTts;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// assigned handle - initialisation
mTts = new TextToSpeech(this,
(OnInitListener) this // TextToSpeech.OnInitListener
);
}
// Implements TextToSpeech.OnInitListener.
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
// Set preferred language to US english.
_langTTSavailable = mTts.setLanguage(Locale.US); // Locale.FRANCE etc.
if (_langTTSavailable == TextToSpeech.LANG_MISSING_DATA ||
_langTTSavailable == TextToSpeech.LANG_NOT_SUPPORTED) {
} else if ( _langTTSavailable >= 0) {
mTts.speak("Good morning",
TextToSpeech.QUEUE_FLUSH, // Drop all pending entries in the playback queue.
null);
}
} else {
// Initialization failed.
}
}
@Override
public void onDestroy() {
// TTS shutdown!
if (mTts != null) {
mTts.stop();
mTts.shutdown();
}
super.onDestroy();
}
}
Get supported language:
private TextToSpeech mTts;
// public void onInit(int status){
int result;
String s;
result = mTts.setLanguage( Locale. CANADA ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " CANADA not supported<br>" ;}else{s+=" CANADA supported<br>";}
result = mTts.setLanguage( Locale. CANADA_FRENCH ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " CANADA_FRENCH not supported<br>" ;}else{s+=" CANADA_FRENCH supported<br>";}
result = mTts.setLanguage( Locale. CHINA ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " CHINA not supported<br>" ;}else{s+=" CHINA supported<br>";}
result = mTts.setLanguage( Locale. CHINESE ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " CHINESE not supported<br>" ;}else{s+=" CHINESE supported<br>";}
result = mTts.setLanguage( Locale. ENGLISH ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " ENGLISH not supported<br>" ;}else{s+=" ENGLISH supported<br>";}
result = mTts.setLanguage( Locale. FRANCE ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " FRANCE not supported<br>" ;}else{s+=" FRANCE supported<br>";}
result = mTts.setLanguage( Locale. FRENCH ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " FRENCH not supported<br>" ;}else{s+=" FRENCH supported<br>";}
result = mTts.setLanguage( Locale. GERMAN ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " GERMAN not supported<br>" ;}else{s+=" GERMAN supported<br>";}
result = mTts.setLanguage( Locale. GERMANY ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " GERMANY not supported<br>" ;}else{s+=" GERMANY supported<br>";}
result = mTts.setLanguage( Locale. ITALIAN ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " ITALIAN not supported<br>" ;}else{s+=" ITALIAN supported<br>";}
result = mTts.setLanguage( Locale. ITALY ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " ITALY not supported<br>" ;}else{s+=" ITALY supported<br>";}
result = mTts.setLanguage( Locale. JAPAN ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " JAPAN not supported<br>" ;}else{s+=" JAPAN supported<br>";}
result = mTts.setLanguage( Locale. JAPANESE ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " JAPANESE not supported<br>" ;}else{s+=" JAPANESE supported<br>";}
result = mTts.setLanguage( Locale. KOREA ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " KOREA not supported<br>" ;}else{s+=" KOREA supported<br>";}
result = mTts.setLanguage( Locale. KOREAN ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " KOREAN not supported<br>" ;}else{s+=" KOREAN supported<br>";}
result = mTts.setLanguage( Locale. PRC ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " PRC not supported<br>" ;}else{s+=" PRC supported<br>";}
result = mTts.setLanguage( Locale. ROOT ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " ROOT not supported<br>" ;}else{s+=" ROOT supported<br>";}
result = mTts.setLanguage( Locale. SIMPLIFIED_CHINESE ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " SIMPLIFIED_CHINESE not supported<br>" ;}else{s+=" SIMPLIFIED_CHINESE supported<br>";}
result = mTts.setLanguage( Locale. TAIWAN ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " TAIWAN not supported<br>" ;}else{s+=" TAIWAN supported<br>";}
result = mTts.setLanguage( Locale. TRADITIONAL_CHINESE ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " TRADITIONAL_CHINESE not supported<br>" ;}else{s+=" TRADITIONAL_CHINESE supported<br>";}
result = mTts.setLanguage( Locale. UK ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " UK not supported<br>" ;}else{s+=" UK supported<br>";}
result = mTts.setLanguage( Locale. US ); if (result == TextToSpeech.LANG_MISSING_DATA ||result == TextToSpeech.LANG_NOT_SUPPORTED) {s += " US not supported<br>" ;}else{s+=" US supported<br>";}
Admob testing on emulator issue.
Android Eclipse code warning:
setTesting(boolean) from the type AdRequest is deprecated
Solution:
adRequest.addTestDevice(AdRequest.TEST_EMULATOR);
Android Eclipse code warning:
setTesting(boolean) from the type AdRequest is deprecated
Solution:
adRequest.addTestDevice(AdRequest.TEST_EMULATOR);
AdView adView = new AdView(this, AdSize.BANNER, "a14d9..........");//MY_AD_UNIT_ID
AdRequest adRequest = new AdRequest();
adRequest.setTesting(true); // deprecated
adRequest.addTestDevice(AdRequest.TEST_EMULATOR); // OK
adView.loadAd(adRequest);
Try this code with CursorLoader:
Uri uri = getIntent().getData();
// DEPRECATED
Cursor cursor = managedQuery(uri, null, null, null, null);
// WORKING - loadInBackground() preventing freezing of app
Cursor cursor = new CursorLoader(getApplicationContext(),uri, null, null, null, null).loadInBackground();
Editace: 2013-12-09 13:04:00
Počet článků v kategorii: 396
Url:delete-canvas-fill-canvas-android-example