If you’re just passing objects around then Parcelable was designed for this. It requires a little more effort to use than using Java’s native serialization, but it’s way faster (and I mean way, WAY faster). From the docs, a simple example for how to implement is: // simple class that just has one member property … Read more
Go to Project » Properties » Java Build Path » Libraries and remove all except the “Android X.Y” (in my case Android 1.5). click OK. Go to Project » Clean » Clean projects selected below » select your project and click OK. That should work. It is also possible that you have a JAR file … Read more
Do this in your onCreate() method. //Remove title bar this.requestWindowFeature(Window.FEATURE_NO_TITLE); //Remove notification bar this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); //set content view AFTER ABOVE sequence (to avoid crash) this.setContentView(R.layout.your_layout_name_here); this refers to the Activity.
Java code: // Converts 14 dip into its equivalent px float dip = 14f; Resources r = getResources(); float px = TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DIP, dip, r.getDisplayMetrics() ); Kotlin code: val dip = 14f val r: Resources = resources val px = TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DIP, dip, r.displayMetrics ) Kotlin extension: val Number.toPx get() = TypedValue.applyDimension( TypedValue.COMPLEX_UNIT_DIP, this.toFloat(), Resources.getSystem().displayMetrics)
textView.setTypeface(null, Typeface.BOLD_ITALIC); textView.setTypeface(null, Typeface.BOLD); textView.setTypeface(null, Typeface.ITALIC); textView.setTypeface(null, Typeface.NORMAL); To keep the previous typeface textView.setTypeface(textView.getTypeface(), Typeface.BOLD_ITALIC)
As a mobile developer, I was sad to find nothing native that supports auto resizing. My searches did not turn up anything that worked for me and in the end, I spent the better half of my weekend and created my own auto resize text view. I will post the code here and hopefully it … Read more
The hosting activity overrides onActivityResult(), but it did not make a call to super.onActivityResult() for unhandled result codes. Apparently, even though the fragment is the one making the startActivityForResult() call, the activity gets the first shot at handling the result. This makes sense when you consider the modularity of fragments. Once I implemented super.onActivityResult() for … Read more
Add the following style in your res/values/styles.xml file (if you don’t have one, create it.) Here’s a complete file: <?xml version=”1.0″ encoding=”utf-8″?> <resources> <style name=”Theme.Transparent” parent=”android:Theme”> <item name=”android:windowIsTranslucent”>true</item> <item name=”android:windowBackground”>@android:color/transparent</item> <item name=”android:windowContentOverlay”>@null</item> <item name=”android:windowNoTitle”>true</item> <item name=”android:windowIsFloating”>true</item> <item name=”android:backgroundDimEnabled”>false</item> </style> </resources> (The value @color/transparent is the color value #00000000 which I put in the res/values/color.xml file. … Read more
There are two options for creating and updating databases. One is to create a database externally, then place it in the assets folder of the project and then copy the entire database from there. This is much quicker if the database has a lot of tables and other components. Upgrades are triggered by changing the … Read more
This is the activity the tools UI editor uses to render your layout preview. It is documented here: This attribute declares which activity this layout is associated with by default. This enables features in the editor or layout preview that require knowledge of the activity, such as what the layout theme should be in the … Read more