Use like this. It will work.

    textView.setTextAppearance(this, android.R.style.TextAppearance_Large);

Or, since API 23, you don&#39;t need to pass a context. Hence, you can simply call:

    textView.setTextAppearance(android.R.style.TextAppearance_Large);

If you want to support API 23 or higher as well as lower one, you can use the below method to simplify your task. Use the below method only if you are already targeting API 23 or higher. If you are targeting API is less than 23, the below code will give error as the new method wasn&#39;t available in it. 

    public void setTextAppearance(Context context, int resId) {
        if (Build.VERSION.SDK_INT &lt; Build.VERSION_CODES.M) {
            super.setTextAppearance(context, resId);
        } else {
            super.setTextAppearance(resId);
        }
    }

Use `TextViewCompat.setTextAppearance()` method which will take care of your sdk version checks.

I am starting to learn the webapi and find myself doing stuff that makes sense in an MVC project but may not make sense in.

Normally in an MVC project I make ViewModels and use that as the parameter or pass them back with the view.

Since there are no views in webapi I guess it does not make sense to have a ViewModel as parameter.

I am wondering maybe if I should just have as a Parameter my EF domains(code first) and put data annotations on top of these. I normally would put the annotations over the view model properties as I liked this over the domain.

However what is stopping me from doing this is I am not 100% clear how my MVC site would work. 

Does the MVC site just spit back simples views and then you use Jquery to call your webapi or do you just call MVC action methods that directly just call the same methods the Webapi would call?

If is the second way then I rather put the data annotations on my view model again but then I am putting the same ones on both the EF domain and VM&#39;s and that seem redundant. 



Does it Make Sense to have ViewModels in the Webapi?

I find that if I initialize an empty dictionary at the beginning, and then adding elements to the dictionary in a for loop (about 110,000 keys, the value for each key is a list, also increasing in the loop), the speed goes down as for loop goes. 

I suspect that the problem is, the dictionary does not know the number of keys at init time and it is not doing something very smart, so perhaps the storage collision becomes quite often and it slows down.

If I know the number of keys and exactly what are those keys, is there any way in python to make a dict (or a hashtable) work more efficiently? I vaguely remember that if you know the keys, you can design the hash function smartly (perfect hash?) and allocate the space beforehand. 

Improving performance of very large dictionary in Python

I am going to implement a `LinearLayout` in which the input fields are programmatically generated according to the number of fields of the database table.

Unfortunately, when I am trying to set the attribute: `textApperance` as `textApperanceLarge` in the `TextView`, it doesn&#39;t work. Below is my code...

    for (int i = 0; i &lt; selectedProducts; i++) {

				premLayout[i] = new LinearLayout(this);
				premLayout[i].setLayoutParams(new LinearLayout.LayoutParams(
						LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
				premLayout[i].setOrientation(LinearLayout.HORIZONTAL);
				premLayout[i].setGravity(Gravity.TOP);

				premTextView[i] = new TextView(this);
				premTextView[i].setLayoutParams(new LinearLayout.LayoutParams(
						LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
						2.0f));
				premTextView[i].setTextAppearance(this, android.R.attr.textAppearanceLarge);
				
				premTextView[i].setText(premiumChannels.get(i));
				premTextView[i].setId(i + 600);
			
				int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 20, getResources().getDisplayMetrics());
				premTextView[i].setWidth(px);
				
				premLayout[i].addView(premTextView[i]);

Setting TextView TextAppeareance Programmatically in android

I am going to implement a <code>LinearLayout</code> in which the input fields are programmatically generated according to the number of fields of the database table.
Unfortunately, when I am trying to set the attribute: <code>textApperance</code> as <code>textApperanceLarge</code> in the <code>TextView</code>, it doesn't work. Below is my code...
<pre><code class="hljs language-ini">for (int i = 0; i &#x3C; selectedProducts; i++) {

			premLayout[i] = new LinearLayout(this);
			premLayout[i].setLayoutParams(new LinearLayout.LayoutParams(
					LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
			premLayout[i].setOrientation(LinearLayout.HORIZONTAL);
			premLayout[i].setGravity(Gravity.TOP);

			premTextView[i] = new TextView(this);
			premTextView[i].setLayoutParams(new LinearLayout.LayoutParams(
					LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
					2.0f));
			premTextView[i].setTextAppearance(this, android.R.attr.textAppearanceLarge);
			
			premTextView[i].setText(premiumChannels.get(i));
			premTextView[i].setId(i + 600);
		
			int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 20, getResources().getDisplayMetrics());
			premTextView[i].setWidth(px);
			
			premLayout[i].addView(premTextView[i]);
</code></pre>

I have been doing debugging on Android using my Nexus 4, however I recently encountered this error here. After doing some research on this error, it seems to be an issue with the app not being deleted properly. The app I am debugging runs fine on my other Android devices as well as the emulators, this error is only occuring on my Nexus 4. I plugged my device into computer, and have tried deleting the data/data folders but I am still getting the same issue. I also checked settings-apps to check it was definitely uninstalled. 

Does anyone have any idea how to resolve this issue? According to some users, I need root access to properly delete data/data, is this true? Or is there another way around this?

Android INSTALL_FAILED_UID_CHANGED

The application that I am developing has a weird behavior the first time that it is installed. If the user backs out of the application normally the first time, it will forever behave as it should.  If the user uses the home button the first time after installing the application, it treats the application as though it should re-launch the home screen again and launch a new version of an activity in front of the old one.

So there are really two issues at hand.  I can&#39;t seem to resolve both of them.

1. Keep the application from closing when it is first installed upon the user hitting the home button.
2. Keep multiple versions of the application from launching when it does this (launchMode helps here a bit, but the first component still triggers).

I don&#39;t have the `launchMode` attribute in the manifest file defined as anything.  So there shouldn&#39;t be any odd behavior as the result of this.  I have experimented now with the `launchmode` attribute of the application to see if I could get it to behave the way it is intended, but there seems to be more to it here than just launching the activities properly.  There is no reason that an application should close itself the first time as far as I can see when the home button is pressed.

I don&#39;t use the `onUserLeaveHint`  within the application either.  I had to be sure once again by doing a search over the project.  So there doesn&#39;t seem to be any overriding of the home button attempted at all.

Even after re-starting the phone, the home button behaves normally again.  Not sure what causes the initial installation to treat the home button as a flag to start the application from scratch.

Once the user backs out of the application the first time, the issue is permanently resolved.  Any thoughts on where I should look?

Recently there has been a search within the application to see if perhaps it triggers only then because of an `onUpgrade()` component of the SQLite database method causing some odd behavior.

  

    @Override
    public void onUpgrade (SQLiteDatabase db, int oldVersion, int newVersion) {
        			if (newVersion &gt; oldVersion) {

               }
           }
Or in another location that might trigger with an update from the manifest file if I was passing along a newer version of the APK along to a device that had a version on it already that was one lower than the current one.  However, nothing in this part of the code leads me to believe that it should affect anything related to the launch sequence.

The manifest file (with names changed) is supplied below for what is currently being used in the application.  

    

&lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
&lt;manifest xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
      package=&quot;com.mypackage&quot;
      android:versionCode=&quot;6&quot;
      android:versionName=&quot;2.0.0&quot;
      android:installLocation=&quot;preferExternal&quot;&gt;

    &lt;uses-sdk android:minSdkVersion=&quot;10&quot; android:targetSdkVersion=&quot;10&quot;/&gt;

    &lt;uses-permission android:name=&quot;android.permission.ACCESS_NETWORK_STATE&quot;&gt;&lt;/uses-permission&gt;
    &lt;uses-permission android:name=&quot;android.permission.INTERNET&quot;&gt;&lt;/uses-permission&gt;
    &lt;uses-permission android:name=&quot;android.permission.WRITE_EXTERNAL_STORAGE&quot;&gt;&lt;/uses-permission&gt;
	&lt;uses-permission android:name=&quot;com.android.vending.CHECK_LICENSE&quot;&gt;&lt;/uses-permission&gt;
	&lt;uses-permission android:name=&quot;android.permission.BLUETOOTH&quot;/&gt;
	&lt;uses-permission android:name=&quot;android.permission.BLUETOOTH_ADMIN&quot;/&gt;
	
    &lt;uses-permission android:name=&quot;android.permission.VIBRATE&quot; android:required=&quot;false&quot;/&gt;
    &lt;uses-permission android:name=&quot;android.permission.CAMERA&quot; android:required=&quot;false&quot;/&gt;
    &lt;uses-feature android:name=&quot;android.hardware.camera&quot; android:required=&quot;false&quot;/&gt;
    &lt;uses-feature android:name=&quot;android.hardware.camera.autofocus&quot; android:required=&quot;false&quot;/&gt;
    
    &lt;application android:icon=&quot;@drawable/icon&quot;
    			 android:label=&quot;@string/app_name&quot;
    			 android:allowBackup=&quot;false&quot;
    			 android:theme=&quot;@android:style/Theme.Black.NoTitleBar.Fullscreen&quot;
    			 &gt;
        &lt;activity android:name=&quot;.MyMain&quot;
                  android:label=&quot;@string/app_name_with_version&quot;
                  android:screenOrientation=&quot;portrait&quot;
                  android:windowSoftInputMode=&quot;adjustPan&quot;	/&gt;
        &lt;activity android:name=&quot;.StartupActivity&quot;
                  android:label=&quot;@string/app_name&quot;
                  android:screenOrientation=&quot;portrait&quot;
				  &gt;
            &lt;intent-filter&gt;
                &lt;action android:name=&quot;android.intent.action.MAIN&quot; /&gt;
                &lt;category android:name=&quot;android.intent.category.LAUNCHER&quot; /&gt;
            &lt;/intent-filter&gt;
        &lt;/activity&gt;
		&lt;activity	android:name=&quot;.SelectActivity&quot;	
		    		android:label=&quot;@string/app_name_with_version&quot;
		    		android:screenOrientation=&quot;portrait&quot;/&gt;
		&lt;activity	android:name=&quot;.ImageSelectionActivity&quot;
		    		android:theme=&quot;@android:style/Theme.Dialog&quot;
		    		android:label=&quot;@string/app_name_with_version&quot;
					android:screenOrientation=&quot;portrait&quot;
					android:configChanges=&quot;orientation|keyboardHidden&quot;/&gt;			
		&lt;activity	android:name=&quot;.DetailsActivity&quot;
		    		android:label=&quot;@string/app_name_with_version&quot;
		    		android:screenOrientation=&quot;portrait&quot;/&gt;
		&lt;activity	android:name=&quot;.EMailActivity&quot;	
		    		android:label=&quot;@string/app_name_with_version&quot;		
		    		android:screenOrientation=&quot;portrait&quot;/&gt;
		&lt;activity	android:name=&quot;.SendTo&quot; 
		    		android:label=&quot;@string/share_label&quot; 
		    		android:theme=&quot;@android:style/Theme.Dialog&quot;	&gt;
		    &lt;INTENT-FILTER&gt;  
  				&lt;ACTION android:name=&quot;android.intent.action.MAIN&quot;&gt;  
  				&lt;CATEGORY android:name=&quot;android.intent.category.LAUNCHER&quot;/&gt;  
 				&lt;INTENT-FILTER&gt;  
  					&lt;ACTION android:name=&quot;android.intent.action.VIEW&quot;&gt;  
  					&lt;CATEGORY android:name=&quot;android.intent.category.DEFAULT&quot;&gt;  
	  					&lt;CATEGORY android:name=&quot;android.intent.category.BROWSABLE&quot;&gt;  
	  					&lt;DATA android:scheme=&quot;callback&quot; android:host=&quot;twitter&quot;/&gt;  
						&lt;/CATEGORY&gt;  
					&lt;/CATEGORY&gt;
					&lt;/ACTION&gt;
				&lt;/INTENT-FILTER&gt;
				&lt;/ACTION&gt;
			&lt;/INTENT-FILTER&gt;
		&lt;/activity&gt;
		&lt;activity	android:name=&quot;.CreateMyActivity&quot;
		    		android:label=&quot;@string/create_account_label&quot;
		    		android:screenOrientation=&quot;portrait&quot;
		    		android:theme=&quot;@android:style/Theme.Dialog&quot;/&gt;
		&lt;activity	android:name=&quot;.ViewInLayoutActivity&quot;
		    		android:label=&quot;@string/app_name_with_version&quot;	
		    		android:screenOrientation=&quot;portrait&quot;/&gt;
		&lt;activity	android:name=&quot;.Preferences&quot;
					android:label=&quot;@string/set_preferences&quot; 
					android:screenOrientation=&quot;portrait&quot;
					android:theme=&quot;@android:style/Theme.Dialog&quot;/&gt;
		&lt;activity	android:name=&quot;.AboutActivity&quot;	
		    		android:label=&quot;@string/app_name_with_version&quot;		
		    	    android:screenOrientation=&quot;portrait&quot;/&gt;
		&lt;activity   android:name=&quot;.InteractiveActivity&quot; 
		    		android:label=&quot;@string/app_name_with_version&quot;
		    	    android:screenOrientation=&quot;portrait&quot;
		    	    android:theme=&quot;@android:style/Theme.Dialog&quot;/&gt;	
		&lt;activity   android:name=&quot;.AlertFailedCommunications&quot;
		    		android:screenOrientation=&quot;portrait&quot;
		    		android:label=&quot;@string/alert_account_label&quot;
		    		android:theme=&quot;@android:style/Theme.Dialog&quot;/&gt;
    &lt;/application&gt;    
&lt;/manifest&gt;

Re-launch of Activity on Home button, but...only the first time

   I want to customize the look of the Facebook login button which we get along with the Facebook sdk for android (facebook-android-sdk-3.0.1). I want a simple android button which has title &quot;Login via Facebook&quot;. I could not find any documentation regarding that.

 So if any one knows on how to do it in a simple way, please tell me or direct me on how to do it.

customize Android Facebook Login button

Getting error, the method put double is undefined for this type of sharedPreferences editor.Eclipse is given one quick fix add cast to editor, but when i do that its still given errors, Why cant i put double. 

The code:
    
    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();

        if (TextUtils.isEmpty(editBl.getText().toString())) {
            numberOfBl = 0;
        } else {
            numberOfBl = Integer.parseInt(editBl.getText().toString();

        }
        if (TextUtils.isEmpty(editSt.getText().toString())) {
            tonOfSt = 0;
        } else {
            tonOfSt = Double.parseDouble(editSt.getText().toString());

        }
        
        SharedPreferences prefs = getSharedPreferences(
                &quot;SavedTotals&quot;, Context.MODE_PRIVATE);

        SharedPreferences.Editor editor = prefs.edit();

        editor.putInt(&quot;savedBl&quot;, numberOfBl);
        editor.putDouble(&quot;savedSt&quot;, tonOfSt);


        editor.commit();
    }


Can&#39;t put double SharedPreferences

I&#39;m developing some Application which allows select image from SD Card, save it into database and set this value for ImageView. I need to know way for converting uri to string and string to uri. Now I used getEncodedPath() method of Uri, but, for example, this code doesn&#39;t work:

	ImageView iv=(ImageView)findViewById(R.id.imageView1);
	Uri uri=Uri.parse(&quot;/external/images/media/470939&quot;);
	Log.e(&quot;uri1&quot;, uri.toString());
	iv.setImageURI(uri);

Therefore I don&#39;t know how I can save Uri into database and create a new Uri from saved value. Please, help me to fix it. 

Convert Uri to String and String to Uri

I have a `textView` inside with a number (variable) and a `string`, how can I give the number one size larger than the `string`?
the code:

    TextView size = (TextView)convertView.findViewById(R.id.privarea_list_size);
    if (ls.numProducts != null) {
    	size.setText(ls.numProducts + &quot; &quot; + mContext.getString(R.string.products));
    }
	    

I want ls.numproducts has a size different from the rest of the text. How to do?

Different font size of strings in the same TextView

Android offers a variety of interfaces all related to text and strings:
`Spanned`, `SpannedString`, `Spannable`, `SpannableString` and `CharSequence`.

I have used all of the above in various scenarios **usually** after using `Html.fromHtml()` to display linkable text inside a `TextView` in order to apply some styling to it.

I have tried to understand the purpose/usage of these interfaces from Android&#39;s official documentation and have failed as it is quite confusing..
What is the purpose of these interfaces? in which scenarios is it mostly common to use them? In which cases is it best to avoid using them? Are there any obvious performance impacts to be considered when using any one of them?

If anyone could provide a decent explanation it would be much appreciated.

Android Spanned, SpannedString, Spannable, SpannableString and CharSequence

I have a textview and want its corner to be in round shape. I already know it can be done using `android:background=&quot;@drawable/somefile&quot;`. In my case, this tag is already included so cannot use again. e.g `android:background=&quot;@drawable/mydialogbox&quot;` is already there to create image in background 

    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        android:layout_width=&quot;wrap_content&quot;
        android:layout_height=&quot;fill_parent&quot;
        android:layout_gravity=&quot;top&quot;
        android:background=&quot;@drawable/mydialogbox&quot;
        android:orientation=&quot;horizontal&quot; &gt;
    
        &lt;TextView
            android:id=&quot;@+id/textview_name&quot;
            android:layout_alignParentTop=&quot;true&quot;
            android:layout_centerHorizontal=&quot;true&quot; /&gt;
    
        &lt;/LinearLayout&gt;
        
    &lt;/RelativeLayout&gt;

so when I want `textview(textview_name)` also with round corner, how this can be achieved.

Rounded corner for textview in android

 - I have a `listview`, that has a single `imageview` which is
   scrollable vertically
 - I am trying to place a `textview` on top of `Imageview`
 - Both the views must be visible


----------

 1. Is it possible ?
 2. If yes, How to do it programmatically ?
 3. What changes should i need to make ?

----------


list_view_item_for_images.xml

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;
    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
        xmlns:tools=&quot;http://schemas.android.com/tools&quot;
        android:layout_width=&quot;fill_parent&quot;
        android:layout_height=&quot;fill_parent&quot; &gt;
    
        &lt;ImageView
            android:id=&quot;@+id/flag&quot;
            android:layout_width=&quot;fill_parent&quot;
            android:layout_height=&quot;250dp&quot;
            android:layout_alignParentLeft=&quot;true&quot;
            android:layout_alignParentRight=&quot;true&quot;
            android:scaleType=&quot;fitXY&quot;
            android:src=&quot;@drawable/ic_launcher&quot; /&gt;
    
    &lt;/RelativeLayout&gt;


It gives a output like below

![enter image description here][1]



How to do something like below

![enter image description here][2]



note :: Dish 1 &amp; 2 are textviews


  [1]: http://i.stack.imgur.com/dRAl1.png
  [2]: http://i.stack.imgur.com/LixBA.png

Placing a textview on top of imageview in android

I&#39;m adding line spacing in my textview which spans multiple lines.
What&#39;s the difference between `android:lineSpacingExtra` and `android:lineSpacingMultiplier`?

lineSpacingExtra with 2dp worked fine for me but I was wondering what the Multiplier does instead?

Content Type	Original Author	Original Content on Stackoverflow
Question	Raju yourPepe	View Question on Stackoverflow
Solution 1 - Android	Homam	View Answer on Stackoverflow
Solution 2 - Android	Raghav Sharma	View Answer on Stackoverflow

Setting TextView TextAppeareance Programmatically in android

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Improving performance of very large dictionary in Python

Does it Make Sense to have ViewModels in the Webapi?

Attributions