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How set focus on View Android development example


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Set focus on a View in Android application example source code for Button, EditText, View, TextView, isFocused(), requestFocus() .


// set focus on Button Android example
 private Button mRightButton;
 mRightButton = (Button) a.findViewById(R.id.rightButton);
 mRightButton.requestFocus();
// boolean isFocused() 
boolean b = mRightButton.isFocused(); // true or false

// set focus on TextView directly Android example
((TextView) findViewById(R.id.myText)).requestFocus();

// set focus on View Android example
private View mView;
mView = findViewById(R.id.showAll);
mView.requestFocus();

// set focus on EditText Android example
private EditText mEdit;
mEdit = (EditText)findViewById(R.id.myEdit);
mEdit.requestFocus();

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Shuffle array int string Java Android | shuffle-array-int-string-java-android



String [] arOfStrings = {"one", "two", "three"};
List<String> mListOfStrings = new ArrayList<String>(Arrays.asList(arOfStrings));
Collections.shuffle(mListOfstrings);
String str = mListOfStrings.get(2);// 2 is index of pozition an element


int [] arOfInt = {1, 2, 3};
List<Integer> mListOfInt = new ArrayList<Integer>(Arrays.asList(arOfInt));
Collections.shuffle(mListOfInt);
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For some graphics you can use Paint.NET editor.
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How quickly restart adb.exe ADB server Android emulator example | how-quickly-restart-adb-exe-adb-server-android-emulator-example


Create file restartADB.bat in folder
c:\Program Files\Android\android-sdk-windows\platform-tools\
Write into restartADB.bat this code:

adb kill-server && adb start-server
pause

Save restartADB.bat file.
If you want restart adb.exe server, run restartADB.bat by double click on icon.


Next example:

  1. Open Total Commander

  2. Open folder with adb.exe usually in
    c:\Program Files\Android\android-sdk-windows\platform-tools\

  3. Put into command line command: adb kill-server && adb start-server and press Enter



[caption id="attachment_778" align="alignleft" width="300" caption="ADB server restart by command line"]adb-restart-server-android-emulator[/caption]

Try restart ADB if this or similar errors:
Emulator] emulator: emulator window was out of view and was recentred



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Programmatically determine if App is running on Android Emulator | programmatically-determine-if-app-is-running-on-android-emulator


You can get list by class Build
For example:

if(Build.MANUFACTURER.equals("unknown")) {
		// Emulator
	}


List of Build class getting from emulator:
"BOARD=unknown
BRAND=generic
CPU_ABI=armeabi
DEVICE=generic
DISPLAY=sdk-eng 2.1-update1 ECLAIR 35983 test-keys
FINGERPRINT=generic/sdk/generic/:2.1-update1/ECLAIR/35983:eng/test-keys
HOST=android-test-13.mtv.corp.google.com
ID=ECLAIR
MANUFACTURER=unknown
MODEL=sdk
PRODUCT=sdk
TAGS=test-keys
TIME=1273161972000
TYPE=eng
USER=android-build
"


Editace: 2011-10-09 13:08:13
Počet článků v kategorii: 397
Url:how-set-focus-on-view-android-development-example

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