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How to Add Home Screen Widgets on Your Android Phone


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Long press by finger on screen
From dialogue select Widgets
Select your widget
Put your widget on the screen

Video tutorial - to add home screen widgets - Android 2.1


397LW NO topic_id




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Další témata ....(Topics)


92

How add Android code templates to Eclipse | how-add-android-code-templates-to-eclipse


If you have to type frequently the same code you can create templates which can be activate via autocomplete with Ctrl + Space.

For example lets assume setOnClickListener body.

To create a template for this select the menu Window->Preferences and Open Java -> Editor -> Templates

Create new Android template in Eclipse



Type name of template in Eclipse s editor and pres Ctrl+Space


[caption id="attachment_1114" align="alignleft" width="300" caption="Eclipse-show-template-proposals"]eclipse-show-template-proposals[/caption]


Select your template from intellisense help and press Enter or double click on selected item.


[caption id="attachment_1116" align="alignleft" width="300" caption="Eclipse - select your template"][/caption]



	mIdButtonHome.setOnClickListener(new View.OnClickListener() {
		public void onClick(View v) {
			Intent browserIntent = new Intent(Intent.ACTION_VIEW,
					Uri.parse("//android.okhelp.cz/category/software/"));
			startActivity(browserIntent);
		}
	});






Quick help in Eclipse editor: select keyword and press Ctrl+1

Eclipse quick help
112

How to capture screenshot of emulator window - Android sample | how-to-capture-screenshot-of-emulator-window-android-sample


When Eclipse and the emulator runs.
To access the DDMS perspective, go to Window > Open Perspective > DDMS. If DDMS does not appear, go to Window > Open Perspective > Other ... and select DDMS.

Open Devices TAB. Window -> Show view -> Devices

From Devices TAB select Screen Capture
Android emlator screen capture by eclipse
228

Eclipse "id cannot be resolved or is not a field” error Android | eclipse-id-cannot-be-resolved-or-is-not-a-field-error-android


"id cannot be resolved or is not a field” error
If you copy project to workspace or some code from other project you can get this error.

Try remove or add import your R file:

import com.example.app.R


Check xml files.
Clean project by menu Project-Clean

Maybe you have to create new project end copy old source files to new project folders.
69

Timer task TimerTask run cancel Android example | timer-task-timertask-run-cancel-android-example


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();
    	 }
    
    }    
}


122

Eclipse Graphical Editor does not display a xml source code - error bug | eclipse-graphical-editor-does-not-display-code-error-bug


Try this solutions:
1.) Save xml file
2.) Close tab with xml file
3.) Reopen xml file

1.) Open from menu Window->Android SDK Manager
2.) Select available updates (Tools, SDK etc.)
3.) Install updates

1.) Open from menu Help->Check for Updates
2.) Install available plugins what You need
3.) Restart Eclipse




Editace: 2013-12-09 10:09:15
Počet článků v kategorii: 397
Url:how-to-add-home-screen-widgets-on-your-android-phone

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