How to clear or hide an ImageView in Android
// solution 1
ImageView imageView = (ImageView)findViewById(R.id.myimage);
imageView.setImageDrawable(null);
// or
imageView.setImageResource(0);
// solution 2 hide ImageView
imageView.setVisibility(View.INVISIBLE);
// solution 3 resize ImageView 0, 0
hImageViewSemafor.setLayoutParams(new LinearLayout.LayoutParams(0,0));
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Where file(s) does eclipse store Java code style settings to?
If you need copy any old templates to the new workspace.
You can edit the Eclipse Templates from menu Window - Preferences - Java - Editor - Templates.
If you need copy any old templates to the new workspace.
workspace\.metadata\.plugins\org.eclipse.core.runtime\.settings\org.eclipse.jdt.ui.prefs
You can edit the Eclipse Templates from menu Window - Preferences - Java - Editor - Templates.
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>";}
- create div with class with name e.g. circle
- create in styleSheet.css class circle
html code
<div class="circle" id="">3</div>
css code
.circle {
border-radius: 50%;
width: 50px;
height: 50px;
background: yellow;
position: absolute;
display: block;
border: 6px solid blue;
font-size: 50px;
text-align: center;
}
3
String sFileContent = readFile("myfile.txt",StandardCharsets.UTF_8);
static String readFile(String path, Charset encoding)
throws IOException
{
byte[] encoded = Files.readAllBytes(Paths.get(path));
return encoding.decode(ByteBuffer.wrap(encoded)).toString();
}
// write file
String sOut = "text blah hello world etc.";
writeToFile(sOut"someName.txt");
static void writeToFile(String sB,String name) {
String folder = ("c:\\folder\");
File f = new File(folder+ name);
BufferedWriter writer = null;
writer = new BufferedWriter( new OutputStreamWriter(
new FileOutputStream( folder+name),"UTF-8"));
writer.write( sB);
if ( writer != null)
writer.close( );
}
TypeFace, setTypeface, font, font family, array of String, Button create dynamically
@Override
protected void onStart() {
LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(
48,
55
);
Typeface typeFace = Typeface.MONOSPACE;
String [] ar = {"A","B","C","D","E","F","G","H","J","K"};
for (int i = 0; i < ar.length; i++) {
Button buttonView = new Button(this);
buttonView.setText(Html.fromHtml("<b>"+ar[i]+"</b>"));
buttonView.setTextColor(Color.BLUE);
buttonView.setTextSize(27.f);
buttonView.setTypeface(typeFace,Typeface.BOLD);
buttonView.setOnClickListener(mThisButtonListener);
if(i%2==0)
mLayoutButtons.addView(buttonView, p);
else
mLayoutButtonsNextRow.addView(buttonView, p);
_listOfButtons.add(buttonView);
}
super.onStart();
}
//////// xml file
<TextView
android:id="@+id/text01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20dp"
android:fontFamily="Arial"
/>
Editace: 2013-12-09 13:07:42
Počet článků v kategorii: 396
Url:how-to-clear-or-hide-an-imageview-in-android