findviewbyid

package com.example.dell.helloworld; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Toast; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } public void showToast(View view) { Toast t= new Toast(this); LayoutInflater inflater=getLayoutInflater(); View v=inflater.inflate(R.layout.toast, (ViewGroup) findViewById

I have a app that plays radio via MediaPlayer as a service. Is it possible to use MediaController in Service class? The problem is that I can use findViewById. I try to get my LinearLayout in onPrepeared methiod ... public class RadioPlayer extends Service implements OnPreparedListener, MediaController.MediaPlayerControl { @Override public void onCreate() { super.onCreate(); mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setOnPreparedListener(this); mediaController = new MediaController(this, false); mediaPlayer.setDataSource(url);

I have a table of 40 squares and each has an ID. When I'm passing Bundle from another activity I need to extract Note, Color and ID from that bundle. And then the app will change/add text and change background of the square specified by extracted ID. Each square has ID of int format. Each ID passed from other activity is in string format. I can't figure out how to make it to findViewById(R.id.passed_id), and how to get two different formats working together. I've tried to change ID of each square but eclipse says that ID have to have a letter along with a number. I'm lost....Here's the code:

Is there any way to find a view by id within the scope of a fragment? I'm using a series of fragments to render a specialized list. The fragments are loaded from a layout, so their widgets all have the same ids. I suppose I can figure out a way to give each widget a custom id during (or right after) creation. However, it would be a lot nicer if I could somehow limit the findViewById to the scope of the fragment. private View myFragmentView; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { myFragmentView = inflater.inflate(R.layout

I have a class that is currently extending Activity and I have methods like findViewById, ArrayAdapter etc. I want to turn it into an independent class but all the above methods become undefined. What is the problem? Shouldn't importing the classes be enough? For eg, I import android.view.View for findViewById but it still makes no difference. Please advise. you should pass the instance of your Activity to your Second Class on the constructor like this : In your Activity Instanciate your Class like this : MyClass instance = new MyClass(this); And in your second Class , the constructor will be

Here's my code in LoginActivity: @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); if (savedInstanceState == null) { getSupportFragmentManager().beginTransaction() .add(R.id.container, new PlaceholderFragment()).commit(); } loginButton = (Button)findViewById(R.id.loginButton); loginButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { onLoginButtonClicked(); } }); // Check if there is a currently logged in user // and they are linked to a Facebook account.

I'm having a strange problem with ClassCastException on Android. One class cannot be casted to the same class: java.lang.RuntimeException: Unable to start activity ComponentInfo: java.lang.ClassCastException: com.example.model.BadeWrapper cannot be cast to com.example.model.BadgeWrapper java.lang.ClassCastException: com.example.events.widgets.TouchyWebView cannot be cast to com.example.events.widgets.TouchyWebView java.lang.ClassCastException: com.example.friends.widgets.FriendsTabView cannot be cast to com.example.friends.widgets.FriendsTabView When I find the line with error, all it does is

I am in the process of making my first app for Android, and I have a Fragment that gets added to my Activity in the Activity 's onCreate() method. The problem I am facing is that I am unable to find any of the views contained within the Fragment from the Activity 's onCreate() method. Other threads have suggested that this is because the Fragment has not yet been inflated, so findViewById() will return null for any views contained within the Fragment . Here is what I mean: Activity: @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); System.out