How to clear or hide an ImageView in Android

Brand	Samsung
Model (codename)	i9250 Galaxy Nexus
Cena, včetně DPH	9000
Veikost Displaye v palcích	4.65
Display-resolution	1280x720
Dotek-typ	kapacitní
CPU typ
CPU MHz	1200
CPU core	2
L2 cache
RAM	1 GB
ROM	16 - 32 GB
GPU	TI OMAP 4460 1,2 GHz dual-core
NenaMark2 Benchmark
GPU-GLBenchmark
Baterie mAh	1750
Foto MPx	5
Autofocus	yes
Video	480p - 30 frames/s
Official Android ICS	Android 4.0 Ice Cream Sandwich
CyanogenMod support
Dotek-prstů-max
Display-ppi
Display-retina
Network	GSM&EDGE: 850 / 900 / 1.800 / 1.900
Connectivity
Pozn.

samsung-i9250-galaxy-nexus image

Try this source code:

Bitmap myBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.my_image)
.copy(Bitmap.Config.ARGB_8888, true);
Canvas c = new Canvas(myBitmap);
// etc.  ....... 

Issue: Immutable bitmap passed to Canvas constructor
Solution: Bitmap myBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.my_image)
.copy(Bitmap.Config.ARGB_8888, true);

Try some solution - each individually or all

1. Check AndroidManifest.xml activity declaration
   

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

   
   


2. Delete BUILD folder in module tree and Clean / Rebuild project


3. Restart Android Studio

Try this code:

final String ERROR = "my error message....";

 private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
// some code and method ..... see AsyncTask

       @Override
        protected String doInBackground(String... urls) {

              URL urlL = null;
                try {
                    urlL = new URL(url);//"//chmi.cz..../"
                    HttpURLConnection urlConnection = null;
                    try {
                         urlConnection = (HttpURLConnection) urlL.openConnection();
                        InputStream in = new BufferedInputStream(urlConnection.getInputStream());
                      response =  readStream(in);
                        return response;
                    } catch (IOException e) {
                        //throw new RuntimeException(e);

                    } finally {
                        if(urlConnection != null)
                            urlConnection.disconnect();
                        return ERROR;
                    }
                } catch (MalformedURLException e) {
                    e.printStackTrace();
                    return ERROR;
                }
           }
            return response;
        }

        private String readStream(InputStream is) {
            try {
                ByteArrayOutputStream bo = new ByteArrayOutputStream();
                int i = is.read();
                while(i != -1) {
                    bo.write(i);
                    i = is.read();
                }
                return bo.toString();
            } catch (IOException e) {
                return "";
            }
        }

Example source code for Android Developers

// clickable TextView
public TextView createTextView(String sText, Context con){
 TextView b = null;
 try {
  b = new TextView (con);
  b.setTextSize(15.0f);
  b.setTextColor(Color.rgb( 0, 0, 200));
  b.setOnClickListener(this);
  b.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
  LayoutParams.WRAP_CONTENT));
  b.setText(sText);
  //tr.addView(b, 60,30);
  } catch (Exception e) {
  e.printStackTrace();
 return b;
 }
return b;
}
/*****************/
public void onClick(View view) {
 try {
  String s = ((TextView) view).getText().toString();
 }
 catch (Exception e1) {
   e1.printStackTrace();
 }
}
/***********/

// if you want restore in TextView after chagne of orientation
// you have to put  code to Manifest.xml android:configChanges

activity android:name=".main"
android:label="@string/app_name"
android:configChanges="keyboardHidden|orientation" //this line important !!!!!!!