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Shared Preferences file path Android


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/data/data/<package>/shared_prefs/<package>_preferences.xml

String TAG = "MyActivityName";
File f = new File("/data/data/"+this.getPackageName()
+"/shared_prefs/"+this.getPackageName()+"_preferences.xml");
if(f.exists())
	Log.d(TAG, "exist");
else
	Log.d(TAG, "not exist");


397LW NO topic_id




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286

Eclipse - Workspace in use or cannot be created chose a different one | eclipse-workspace-in-use-or-cannot-be-created-chose-a-different-one


Open your workspace folder and subfolder .metadata:
C:\Users\workspace\.metadata\

Delete .lock file
4

Read file from URL | read-file-from-url


Read file from URL to array of byte and convert to UTF-8 String Android examle source code.

URL urlLoc = new URL("//myweb.com/myfile.html");
URLConnection conexion = urlLoc.openConnection();
conexion.setConnectTimeout(4000);
conexion.setReadTimeout(1000);
conexion.connect();

// downlod the file
InputStream input = new BufferedInputStream(urlLoc
		.openStream());

StringBuffer responseBuffer = new StringBuffer();
byte[] byteArray = new byte[1024];
while (input.read(byteArray) != -1)
 {   
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        responseBuffer.append(res);
        byteArray = null;
        byteArray = new byte[1024];
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String response = responseBuffer.toString().trim();



356

No USB devices or running detected | no-usb-devices-or-running-detected


Check

  • is sett debug mode on device?

  • enabled debugging over USB?

  • is device right connected?

  • have you downloaded and instaled drivers for your device on PC?

  • For Windows //developer.android.com/sdk/win-usb.html

  • try disconnect and connect USB cable

  • try do restart Android Studio

256

Save Restore Array List Android Example | save-restore-array-list-android-example



        int[] mArrayOfInt;
        String[] mArrayOfString;
        List<String> mList;
        public void saveState(Bundle map)
        {
                map.putIntArray("mArrayOfInt", mArrayOfInt);
                map.putStringArray("mArrayOfString", mArrayOfString);
                map.putStringArrayList("mList", mList);
        }

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190

Get Screen Size Pixels per Inch Android example | get-screen-pixels-android-example


The exact physical pixels per inch of the screen
Get size of pixel
Get DPI
Get count of pixels per inch

        float mXDpi;
        float mYDpi;
           DisplayMetrics metrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(metrics);
            mXDpi = metrics.xdpi; // The exact physical pixels per inch of the screen in the X dimension. 
            mYDpi = metrics.ydpi;
          float  mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre
          float  mMetersToPixelsY = mYDpi / 0.0254f;




Editace: 2013-11-11 19:01:56
Počet článků v kategorii: 397
Url:shared-preferences-file-path-android

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