Hashtable find value by key Java Android example
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Hashtable find value by key Java Android basic example.
import java.util.Hashtable;
public class MainClass {
public static void main(String[] arg) {
// english;germany dictionary
String[] arrayOfString = { "one;eine", "two;zwei", "three;drei" };
Hashtable hashTable = new Hashtable();
for(String s: arrayOfString){
String[] array = s.split(";");
String sKey ="", sValue="";
if(array.length > 1){
sKey = array[0]; sValue = array[1];
hashTable.put(sKey, sValue);
}
}
// check if key exists
if( hashTable.containsKey("two")){
System.out.print("two = " + hashTable.get("two"));
}
}
}
/*
two = zwei
*/
397LW NO topic_id
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Další témata ....(Topics)
If you create a button or view programmatically with OnClickListener you can set a tag key before button in parent layout is added.
And get correct button by this tag getTag() instead getId() in OnClickListener etc.
And get correct button by this tag getTag() instead getId() in OnClickListener etc.
Button button = new Button(getApplicationContext());
int idOfButton = button.getId(); // return -1
button.setTag("my_button");
String sTag = (String) button.getTag(); // return "my_button"
/data/data/<package>/shared_prefs/<package>_preferences.xml
String TAG = "MyActivityName";
File f = new File("/data/data/"+this.getPackageName()
+"/shared_prefs/"+this.getPackageName()+"_preferences.xml");
if(f.exists())
Log.d(TAG, "exist");
else
Log.d(TAG, "not exist");
Solution:
public void alertMy(String sTitle, String sMessage){
AlertDialog.Builder builder = new AlertDialog.Builder(Test.this); // activity
builder.setTitle(sTitle)
.setMessage(sMessage)
.setCancelable(false)
.setNegativeButton("Close",new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
AlertDialog alert = builder.create();
alert.show();
}
android:autoLink="all"
<!-- text1 automatically linkifies things like URLs and phone numbers. -->
<TextView
android:id="@+id/text1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:autoLink="all"
android:text="@string/link_text_auto"
/>
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 10:56:31
Počet článků v kategorii: 397
Url:hashtable-find-value-by-key-java-android-example
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