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Cannot resolve symbol HttpGet,HttpClient,HttpResponce in 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 "";
            }
        }


396LW NO topic_id




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Další témata ....(Topics)


386

Error type 3 Activity class does not exist | error-type-3-activity-class-does-not-exist


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

320

Installation error: INSTALL_FAILED_CONTAINER_ERROR | installation-error-install_failed_container_error


1.) Try delete some apps from Android emulator (can from Eclipse DDMS perspective
- File Explorer tab - data/apps folder path )
2.) Try resize emulator internal storage or SD card storage to hight size
3.)Try add to AndroidManifest.xml android:installLocation="preferExternal"

<manifest xmlns:android="//schemas.android.com/apk/res/android"
    package="com.myweb.mypackage"
    android:installLocation="preferExternal"

4.) Try resize particion from Eclipse
Preferences,
select Android- Launch
Add "-partition-size 1024" into "Default emulator option” field.
Click "Apply” and use your emulator as usual
127

Force Screen On - dont use WakeLock - use getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON) - Android sample | force-screen-on-dont-use-wakelock-use-getwindow-addflagswindowmanager-layoutparams-flag_keep_screen_on-android-sample


FLAG_KEEP_SCREEN_ON saving energy. Protects the battery if a user closing applications using the Return button on device. The device will returned to user screen mode settings.

@Override
    protected void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        //..........
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
    }
85

Open url with browser if button clicked Android example. | open-url-with-browser-if-button-clicked-android-example


Button, setOnClickListener, Intent.ACTION_VIEW, startActivity Android example.


Button mIdButtonHome = (Button)findViewById(R.id.idButtonHome);
	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);
		}
	});


35

Android startup tutorial for developers video | android-startup-tutorial-for-developers-video


How install Android emulator on PC
//developer.android.com/sdk/installing.html

Download links:
Java Development Kit JDK download
Eclipse download
Android SDK download