Android_Development

 Here we are gonna get through the  // Setting the intent Intent intent = new Intent(Intent. ACTION_VIEW , Uri. parse (data_earthquake.getmUrl())) ; intent.addFlags(Intent. FLAG_ACTIVITY_NEW_TASK ) ; intent.setPackage( "com.android.chrome" ) ; try { Log. d ( "debug" , "onClick: inTryBrowser" ) ; startActivity(intent) ; } catch (ActivityNotFoundException ex) { Log. e ( "debug" , "onClick: in inCatchBrowser" , ex ) ; intent.setPackage( null ) ; startActivity(Intent. createChooser (intent , "Select Browser" )) ; } here we are declaring the implicit intent and we are trying to open it in the chrome browser and in case if it is not installed in the phone then we get to select the browser. log.d -- is being used for the debug. we set the intent package to be null because we had already provided him the package so we need make it empty first. earthquakeListView.setOnItemClickListener( new AdapterView.OnItemClickLi...

  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     android:orientation="horizontal" android:layout_width="match_parent"     android:layout_height="match_parent" android:paddingEnd="16dp"     android:paddingLeft="16dp"     android:paddingRight="16dp"     android:paddingStart="16dp"     android:paddingTop="16dp"     android:paddingBottom="16dp">     <TextView         android:id="@+id/intensity"         android:layout_width="36dp"         android:layout_height="36dp"         android:layout_gravity="center_vertical"         android:background="@drawable/magnitude_circle"         android:fontFamily="sans-serif-medium"         android:gravity="center"         android:textColor="@android:color/white"     ...

* when we create a custom class in the studio remember the datatype     and keep an eye on them while declaring them in Adapter view     example- if its an String write this textplace.setText(currentposition.getMplace()) ; if its an double write this here we can see that we are converting the numerical value in a string before setting it as a view or it will give an error textintensity.setText(String. valueOf (currentposition.getMintensity())) ;

step - 1 create a listview in activity.xml.             create rootview as linerlayout step - 2 create a customview for listview.              here we are doing this because we have created a listview but what will be in that list view is                   decided by the custom view step - 3 create a custom class for custom layout. step - 4 create custom array adapter. public class NumbersViewAdapter extends ArrayAdapter<NumbersView> {          // invoke the suitable constructor of the ArrayAdapter class      public NumbersViewAdapter( @NonNull Context context, ArrayList<NumbersView> arrayList) {                      // pass the context and arrayList for the super          ...