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Draw drawARGB() Android basic example


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public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

		}
		@Override
		protected void onDraw(Canvas canvas) {
			//drawARGB (int a, int r, int g, int b)
//			a  alpha component (0..255) of the color to draw onto the canvas 
//			r  red component (0..255) 
//			g  green component (0..255)  
//			b  blue component (0..255)  

			canvas.drawARGB(255, 0, 255, 10); 
		}

	}
}



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48

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



153

Rotate Canvas with Bitmap Android example | rotate-canvas-with-bitmap-android-example


drawPath, canvas.rotate, lineTo basic Android example for your testing.





canvas-rotate-image-android-1


canvas-rotate-image-android




// //www.apache.org/licenses/LICENSE-2.0
// The Android Open Source Project
public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {
		private Paint mPaint = new Paint();
		private Path mPath = new Path();

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

			// Construct a wedge-shaped path
			mPath.moveTo(0, -60);
			mPath.lineTo(-20, 80);
			mPath.lineTo(0, 60);
			mPath.lineTo(20, 80);
			mPath.close();
		}

		@Override
		protected void onDraw(Canvas canvas) {
			Paint paint = mPaint;

			canvas.drawColor(Color.WHITE);

			paint.setAntiAlias(true);
			paint.setColor(Color.RED);
			paint.setStyle(Paint.Style.FILL);
			Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
					R.drawable.flower_blue);
			canvas.drawBitmap(bitmapOrg, 10, 10, paint);
			int w = canvas.getWidth();
			int h = canvas.getHeight();
			int cx = w / 2;
			int cy = h / 2;

			canvas.translate(cx, cy);
         // uncomment next line 
			//canvas.rotate(90.0f);
			canvas.drawPath(mPath, mPaint);
		}

	}
}
396

ADB restart device every time Android Studio | adb-restart-device-every-time


Android Studio ADB restart mobile device from USB every time if RUN of DEBUG button pressed

Try to close the mobile application on your device completely before starting again from Android Studio.
Close every fragment.
The problem occurs when the application has multiple fragments.

Date: 13.07.2020 - 08:23
53

Timer stopwatch based on Java Calendar class Android example | timer-stopwatch-java-calendar-android-example


Start Stop Stopwatch Timer Android example source code.


private static long mStartTime = 0L;
Calendar cal;
TextView hTextViewVypis = (TextView)findViewById(R.id.idTextVypis);

void start(){
            cal = Calendar.getInstance();
            mStartTime = cal.getTimeInMillis();
}

void stop(){
     prinOutStopWatchTime();
}


    private void prinOutStopWatchTime() {
    	final long start = mStartTime;
    	
    	cal = Calendar.getInstance();
    	long stopTime = cal.getTimeInMillis();
    	long millis = stopTime - start;
    	long milisekundy = millis % 1000;
    	int seconds = (int) (millis / 1000);
    	int minutes = seconds / 60;
    	seconds     = seconds % 60;
    	int hour = minutes / 60;
    	hour = hour % 60;
    	
    	if (seconds < 10) {
    		hTextViewVypis.setText(hour +  ":" + minutes + ":0" + seconds + ":" + milisekundy);
    	} else {
    		hTextViewVypis.setText(hour  +  ":" + minutes + ":" + seconds + ":" + milisekundy);            
    	}
    	
    }




172

Android Samples | android-samples











AbsListView
AbstractAccountAuthenticator
AbstractThreadedSyncAdapter
AccelerateInterpolator
AccessibilityEvent
AccessibilityService
AccessibilityServiceInfo
Account
AccountAuthenticatorActivity
AccountAuthenticatorResponse
AccountManager
Activity
ActivityInfo
ActivityInstrumentationTestCase2
ActivityManager
ActivityUnitTestCase
AdapterContextMenuInfo
AdapterView
AlarmManager
AlertDialog
AlphaAnimation
AndroidTestCase
Animation
AnimationSet
AnimationUtils
Application
ApplicationTestCase
AppWidgetManager
AppWidgetProvider
ArrayAdapter
AssetFileDescriptor
AsyncTask
AttributeSet
AudioManager
AuthenticatorDescription
AuthenticatorException
AutoCompleteTextView
BackupAgent
BackupAgentHelper
BackupDataInput
BackupDataOutput
BackupManager
BaseAdapter
BaseColumns
BaseExpandableListAdapter
Binder
Bitmap
BitmapDrawable
BitmapFactory
BitmapShader
BluetoothAdapter
BluetoothDevice
BluetoothServerSocket
BluetoothSocket
BroadcastReceiver
Build
Bundle
Button
Callback
Camera
CameraInfo
Canvas
Color
ColorFilter
CompletionInfo
ComponentName
CompoundButton
ConditionVariable
Config
ConfigurationInfo
Contacts
ContactsContract
ContentProvider
ContentProviderClient
ContentProviderOperation
ContentResolver
ContentUris
ContentValues
Context
ContextMenu
ContextMenuInfo
Cursor
CursorAdapter
Data
DatePicker
DatePickerDialog
DecelerateInterpolator
DeviceAdminReceiver
DevicePolicyManager
Dialog
DialogInterface
Display
DisplayMetrics
Drawable
Editable
EditorInfo
EditText
EditTextPreference
Email
Environment
Equalizer
ETC1Util
ExpandableListActivity
ExpandableListAdapter
ExpandableListContextMenuInfo
ExpandableListView
FileBackupHelper
FillType
Filterable
FloatMath
FocusFinder
FormatException
Gallery
Gesture
GestureDetector
GestureLibraries
GestureLibrary
GestureOverlayView
GLES10
GLES20
GLSurfaceView
GLU
GLUtils
Gravity
GridView
Handler
HandlerThread
Html
CharArrayBuffer
CheckBox
CheckBoxPreference
Chronometer
IBinder
Im
ImageButton
ImageSwitcher
ImageView
InputConnection
InputMethodManager
InputMethodService
Instrumentation
Intent
IntentFilter
JetPlayer
Key
Keyboard
KeyboardView
KeyEvent
KeyCharacterMap
LayoutAnimationController
LayoutInflater
LayoutParams
LinearLayout
LinkMovementMethod
ListActivity

ListAdapter
ListPreference
ListView
LiveFolders
Log
Looper
Matrix
MediaController
MediaPlayer
MediaScannerConnection
MediumTest
Menu
MenuInflater
MenuItem
Message
Messenger
MetaKeyKeyListener
MoreAsserts
MotionEvent
MovementMethod
MultiAutoCompleteTextView
NameNotFoundException
NdefMessage
NdefRecord
NfcAdapter
Notification
NotificationManager
OnAccountsUpdateListener
OnBufferingUpdateListener
OnClickListener
OnCompletionListener
OnCheckedChangeListener
OnInitListener
OnItemClickListener
OnItemSelectedListener
OnJetEventListener
OnKeyListener
OnPreparedListener
OnScrollListener
OnSharedPreferenceChangeListener
OnTouchListener
OnVideoSizeChangedListener
OperationApplicationException
OperationCanceledException
Options
PackageInfo
PackageManager
Paint
PaintDrawable
PaintFlagsDrawFilter
Parcel
Parcelable
ParcelFileDescriptor
Path
PendingIntent
People
Phone
Phones
Picture
PictureDrawable
PixelFormat
PorterDuff
PorterDuffXfermode
PowerManager
Preference
PreferenceActivity
PreferenceCategory
PreferenceManager
PreferenceScreen
Process
ProgressBar
ProgressDialog
QuickContactBadge
RadioButton
RadioGroup
RatingBar
RawContacts
RecognitionService
RecognizerIntent
Rect
RectF
RelativeLayout
RemoteCallbackList
RemoteException
RemoteViews
ResolveInfo
ResourceCursorAdapter
Resources
Row
ScaleGestureDetector
ScrollingMovementMethod
ScrollView
SearchManager
SearchRecentSuggestions
SearchRecentSuggestionsProvider
SeekBar
Sensor
SensorEvent
SensorEventListener
SensorManager
Service
ServiceConnection
ServiceTestCase
Shader
ShapeDrawable
SharedPreferences
SimpleAdapter
SimpleCursorAdapter
SimpleCursorTreeAdapter
SimpleExpandableListAdapter
Size
SmallTest
SmsManager
SmsMessage
SpannableString
Spanned
SparseArray
SpeechRecognizer
Spinner
SpinnerAdapter
SQLException
SQLiteDatabase
SQLiteOpenHelper
SQLiteQueryBuilder
StatusUpdates
StructuredName
Style
StyleSpan
Surface
SurfaceHolder
SurfaceView
SyncResult
SystemClock
TabActivity
TabHost
TableLayout
TableRow
TabSpec
TestSuiteBuilder
TextSwitcher
TextToSpeech
TextUtils
TextView
TextWatcher
Time
TimePicker
TimePickerDialog
Toast
ToggleButton
Transformation
TranslateAnimation
TypedArray
Typeface
UiThreadTest
Uri
UriMatcher
URLSpan
Vibrator
VideoView
View
ViewFlipper
ViewGroup
ViewParent
ViewSwitcher
Visualizer
WakeLock
WallpaperManager
WallpaperService
WebView
Window
WindowManager
Xfermode
Xml
XmlResourceParser



Editace: 2013-12-09 13:10:51
Počet článků v kategorii: 397
Url:draw-drawargb-android-basic-example

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