Error type 3 Activity class does not exist

Try some solution - each individually or all

Check AndroidManifest.xml activity declaration

<activity
            android:name=".EnableProfileActivity"
            android:label="@string/app_name" />

Delete BUILD folder in module tree and Clean / Rebuild project

Restart Android Studio

396LW NO topic_id

Další témata ....(Topics)

152

Copy save Bitmap Image Pictures Android example | save-bitmap-image-android-example

Copy file to another


        File path = Environment.getExternalStoragePublicDirectory(
                Environment.DIRECTORY_PICTURES);
        File file = new File(path, "MyPicture.jpg");
           // the Pictures directory exists? 
            path.mkdirs();
            InputStream is = getResources().openRawResource(R.drawable.flower_blue);
            OutputStream os = new FileOutputStream(file);
            byte[] data = new byte[is.available()];
            is.read(data);
            os.write(data);
            is.close();
            os.close();

Copy and compress file


Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
					R.drawable.flower_blue);

try {
	 FileOutputStream out = new FileOutputStream("new_bitmap.jpg");
		bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, out);
} catch (Exception e) {
	e.printStackTrace();
	Log.e("saveBitmap", e.getMessage());
}

175

HTC Desire HD | htc-desire-hd

HTC Desire HD cena od 7 000 KCZ Kč (únor.2012)
HTC Desire HD je chytrý telefon běžící na operačním systému Android.
HTC Desire HD je (22.února2012) druhým nejpoužívanějším chytrým telefonem u programu Sky Map viz tabulka.

Smartphone má hliníkový unibody design, vybaven je Androidem 2.2 (Froyo) a HTC Sense displayem. Na zadní straně jsou dvě plastové krytky, jedna obsahuje baterii, druhá SIM kartu a paměťovou kartu microSDHC. Telefon je vybaven 4,3 palcovým WVGA LCD TFT dotykovým displayem, 8 megapixelovým fotoaparátem (lze nahrávat 720p video), podpora pro HSPA / W-CDMA a quad-band GSM / GPRS / EDGE.

Telefon je vybaven 1 GHz CPU Scorpion MSM8255 procesorem. Tato druhá generace Snapdragon procesoru má nízkou spotřebu energie.

HTC HD má 768 MB RAM a 1,5 GB interní paměti flash. K dispozici je také slot pro microSDHC / XC kartu s kapacitou až 32 GB dat.

HTC Desire HD photo pic image

Zdroj obrázku: wikipedia

369

Android Studio failed to convert drawable into a drawable | android-studio-failed-to-convert-drawable-into-a-drawable

Try this:
- check names of drawables (file name must contain only abc...xyz 012...789 _ . in Resources folder ,
names have to start with lower case
MyImage.jpg == problem ,
names with space
my image.jpg == problem,
names with -
my-image.png == problem)
- check duplicate names with other extension ( my_image.jpg - my_image.png makes the problem)
- restart Android Studio
- if problem persist:
- check c:\Users\me\AndroidStudioProjects\myProject\myModule\build\intermediates\res\merged\debug\ drawable folder for corupted names or delete ALL drawable folders
- synk projekt, rebuild projekt
- if problem persist:
- restart Android Studio, wait for complete closure of the Android Studio!

169

Iterate HashMap getKey getValue Java Example | iterate-hashmap-getkey-getvalue-java-example


 HashMap<String,Locale> _mapOfLocale = new HashMap<String,Locale>();
    _mapOfLocale.put("French",Locale.	FRENCH	);	
    _mapOfLocale.put("German",Locale.	GERMAN	);	
    _mapOfLocale.put("Italian",Locale.	ITALIAN	);	

    for (Entry<String, Locale> entry : _mapOfLocale.entrySet()) {

       System.out.println(entry.getKey());
       System.out.println(entry.getValue());

      }

101

Start an new Activity Intent with a parameter Android example | start-an-activity-with-a-parameter-android-example

putString(), putBoolean(), putInt() etc.¨
How we can start an activity programmatically.


// MainActivity.java
//  myButton.setOnClickListener
Intent binary = new Intent(getApplicationContext(),Calculate.class);
	Bundle b = new Bundle();
	b.putString("prvni_label", "Decimal");
	b.putString("druhy_label", "Binary");
	b.putString("mode", "binary_to_decimal");
        binary.putExtras(b);
	startActivityForResult(binary, 0);
						
// in Calculate.java onCreate

   TextView mTextView1 = (TextView)findViewById(R.id.textView1);
   TextView mTextView2 = (TextView)findViewById(R.id.textView2);    
     Bundle _bundle = getIntent().getExtras();
		mTextView1.setText(_bundle.getString("prvni_label"));
		mTextView2.setText(_bundle.getString("druhy_label"));


//.................. HOW OPEN START NEW ACTIVITY WITHOUT A PARAMETER .........................

startActivity(new Intent(ThisActivity.this, NewActivity.class));

Editace: 2017-03-11 11:34:08
Počet článků v kategorii: 396
Url:error-type-3-activity-class-does-not-exist