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Splash screen alpha animation not working

So I have an app that currently has two Activities. A SplashScreenActivity and a MainActivity. The transition between the two activities works just fine but the problem lies in the SplashScreenActivity itself. In it, there is a single ImageView that is supposed to be initially invisible and then fade in. But instead the image remains invisible the entire time. Please help. Here's the code:
The SplashScreenActivity:
package com.degioncloud;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.ImageView;
public class SplashScreenActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splashscreen);
ImageView logo = (ImageView) findViewById(R.id.iv_logo);
logo.setImageAlpha(0);
logo.animate().alpha(1f).setDuration(1200).withEndAction(new Runnable() {
#Override
public void run() {
Intent i = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(i);
overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out);
finish();
}
});
}
}
The XML of the SplashScreenActivity:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".SplashScreenActivity">
<ImageView
android:id="#+id/iv_logo"
android:layout_width="200dp"
android:layout_height="200dp"
android:src="#mipmap/ic_launcher"
android:layout_centerInParent="true" />
</RelativeLayout>
My Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.degioncloud">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.DegionCloud">
<activity android:name=".MainActivity" />
<activity android:name=".SplashScreenActivity"
android:theme="#style/SplashScreenTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
The MainActivty is empty so I don't see a need to share that but if you need any other file then let me know and I will send a copy.

You need to call start() for the animation to begin:
logo.animate().alpha(1f).setDuration(1200).withEndAction(new Runnable() {
#Override
public void run() {
Intent i = new Intent(SplashScreenActivity.this, MainActivity.class);
startActivity(i);
overridePendingTransition(android.R.anim.fade_in,android.R.anim.fade_out);
finish();
}
}).start();

My app keeps force closing when using 2 intents

Why do my android apps keep closing when using 2 intent? when I delete one of them, it's work. especially if I delete the "Reg" Button in the java files.
Thanks
XML Files:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".LoginAct">
<TextView
android:id="#+id/daftar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:text="#string/daftar"
android:textAlignment="center"
android:textColor="#color/Linktext"
android:clickable="true"
android:focusable="true"
android:layout_marginTop="10dp">
</TextView>
<Button
android:id="#+id/pass"
android:layout_width="wrap_content"
android:layout_height="23dp"
android:layout_gravity="center_horizontal"
android:layout_marginTop="25dp"
android:background="#color/colorPrimaryDark"
android:clickable="true"
android:focusable="true"
android:text="#string/lewat"
android:textColor="#color/textwhite" />
Java Files (If I deleted the "Reg" Button from this file, the app is working, but otherwise it will force close after the splash screen):
package com.soerja.ngalamhistory;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
public class LoginAct extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.act_login);
Button Pass = (Button) findViewById(R.id.pass);
Button Reg = (Button) findViewById(R.id.daftar);
Pass.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(LoginAct.this, MainActivity.class);
startActivity(intent);
}
});
Reg.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(LoginAct.this, RegisAct.class);
startActivity(intent);
}
});
}
}
AndroidManifest Files:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.soerja.ngalamhistory">
<application
android:allowBackup="true"
android:icon="#mipmap/logo"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".SplashAct"
android:theme="#style/SplashTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".LoginAct"
android:label="#string/applogin"
android:theme="#style/LogTheme"></activity>
<activity
android:name=".MainActivity"
android:label="#string/home"
android:theme="#style/AppTheme"></activity>
<activity android:name=".RegisAct"
android:label="#string/appdaftar"
android:theme="#style/LogTheme"></activity>
</application>
</manifest>
I would really appreciate your help because this is my school project :)

You are casting a TextView into a Button. Probably the problem is a invalid cast exception.
In XML, you define the "daftar" as a TextView, but in java you are trying to use it as a Button.
Change it
Button Reg = (Button) findViewById(R.id.daftar);
To it
TextView Reg = (TextView) findViewById(R.id.daftar);
Or change your XML implamentation, defining "daftar" as a Button

here you are using your text view id
android:id="#+id/daftar"
as a reference to declaring button
Button Reg = (Button) findViewById(R.id.daftar);
so i think ,that may be the reason for crash
try this method :
add this in your text xml code:
android:onClick="daftar"
add for java class use this:
public void daftar(View v)
{
Intent intent = new Intent(this, RegisAct.class);
startActivity(intent);
}
and remove the old java code you used for this text view:
i hope this helps.

How to open URL links within my android application

I am using two buttons to open two url links. When i press button it goes to browser. But I want to open these url links within my application. Can somebody help me to solve my issue. My code as below :
Activity Main :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="com.example.vkumar.myapplication.MainActivity"
android:background="#d3a7a7">
<Button
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="GOOGLE"
android:onClick="browser1"
android:id="#+id/browser1"
android:layout_gravity="center"
android:layout_marginTop="30dp"
android:background="#android:color/holo_blue_dark" />
<Button
android:layout_width="150dp"
android:layout_height="wrap_content"
android:text="MAIL"
android:id="#+id/browser2"
android:onClick="browser2"
android:layout_gravity="center"
android:layout_marginTop="30dp"
android:background="#android:color/holo_blue_dark" />
</LinearLayout>
Main Activity :
package com.example.vkumar.myapplication;
import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button browser1 = (Button) findViewById(R.id.browser1);
Button browser2 = (Button) findViewById(R.id.browser2);
Button browser3 = (Button) findViewById(R.id.browser3);
Button browser4 = (Button) findViewById(R.id.browser4);
Button browser5 = (Button) findViewById(R.id.browser5);
}
public void browser1 (View view) {
Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("https://www.google.co.in/"));
startActivity(intent);
}
public void browser2 (View v) {
Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("http://www.gmail.com/"));
startActivity(intent);
}
}
Android manifest :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.vkumar.myapplication">
<uses-permission android:name="android.permission.INTERNET" />
<application android:allowBackup="true" android:icon="#mipmap/ic_launcher" android:label="MY APP" android:supportsRtl="true" android:theme="#style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

simple pass the url to webView on button click then show inside your application. see below example.
On Button link pass the url to webview activity
Intent intent = new Intent(context, WebViewActivity.class);
intent.putExtra("URL", "https://www.google.co.in/");
startActivity(intent);
public class WebViewActivity extends Activity {
private WebView webView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
String url = getIntent().getStringExtra("URL");
webView.loadUrl(url );
}
}

How do i get a button to open a new activity in android studio?

I'd seen this asked in many, many places and have tried to follow the instructions given to no avail. I dont know if the questions are old, i'm doing things incorrectly or if my android studio program isnt working. What i want to do is to only open a new activity when a button is clicked. I'm very new to developing android applications.
I've recently tried to follow the answer provided here: How do I get a button to open another activity in Android Studio?
OnClick on the button is called "goTutorials"
My original activity is called home (Not mainActivity)
The new one is called tutorials.
This is what i added from trying to follow the link above:
In home's java file:
btn = (Button)findViewById(R.id.open_activity_button);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(home.this, tutorials.class));
}
});
In manifest file:
<activity
android:name="tutorials"
android:label="#string/app_name">
</activity>

Method 1
Use the onclick attribute in XML (so that whenever you click the button, defined method will trigger)
Step 1. - go to the XML where you button is(activity_home) & add
<Button
............
android:onClick="gotoTutorial"/>
Step 2. - then go to the home.Java & add following
public void gotoTutorial(View v){
Intent tutorialPage = new Intent (this, tutorials.class);
startActivity(tutorialPage);
}
Method 2
Use the setOnClickListener
Step 1. -
//create the link to the button in the interface
btn_tutorial = (Button)findViewById(R.id.tutorial_button);
btn_tutorial.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent tutorialPage = new Intent (this, tutorials.class);
startActivity(tutorialPage);
}
}

I have created a sample app please see the code below.
You need to specify information of all activities in Manifest file.
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.nextech.startnewactivity">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/AppTheme">
<activity
android:name=".MainActivity"
android:label="#string/app_name"
android:theme="#style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".TutorialsActivity"
android:label="#string/title_activity_tutorials"
android:theme="#style/AppTheme.NoActionBar"></activity>
</application>
</manifest>
My Launcher activity is MainActivity.java
package com.nextech.startnewactivity;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button startTutorials = (Button)findViewById(R.id.startTutorials);
startTutorials.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent tutorialsActivityIntent = new Intent(MainActivity.this,TutorialsActivity.class);
MainActivity.this.startActivity(tutorialsActivityIntent);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.nextech.startnewactivity.MainActivity"
tools:showIn="#layout/activity_main">
<TextView android:id="#+id/welcomeText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:layout_centerHorizontal="true"
android:text="Hello World! This is main activity!" />
<Button android:id="#+id/startTutorials"
android:layout_below="#+id/welcomeText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="Start Tutorials"/>
</RelativeLayout>
TutorialsActivity.java
package com.nextech.startnewactivity;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
public class TutorialsActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tutorials);
}
}
activity_tutorials.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.nextech.startnewactivity.TutorialsActivity"
tools:showIn="#layout/activity_tutorials">
<TextView android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is tutorial activity"
android:layout_centerInParent="true"/>
</RelativeLayout>
I hope it helps.

Your manifest file is not displaying, but make sure you add the activity in your manifest AndroidManifest.xml in the application field. Here's an example from Google: Link
<application ... >
...
<activity
android:name="com.mycompany.myfirstapp.DisplayMessageActivity"
android:label="#string/title_activity_display_message"
android:parentActivityName="com.mycompany.myfirstapp.MyActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.mycompany.myfirstapp.MyActivity" />
</activity>
Otherwise, the method you're using should be correct. You create an intent to the class of the Activity you want to start.
Intent intent = new Intent(this, tutorials.class);
startActivity(intent);
Make sure you have the necessary methods such as onCreate(Bundle savedInstance) Overrided.
Note that in the sample above android:name="" is your activity's full path name to the class (without .class/.java) and label is going to be the action toolbar string you'll see. In the <meta-data/> section you can alter the android:value="" to the starting activity's name so that will need to change based on what you call it.
Finally, make sure it has an XML view to go with it, as it gets inflated in the onCreate(Bundle savedInstance) call.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_layout_here);
}

inside your activity file write this
Button btn = (Button)findViewById(R.id.open_activity_button);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(home.this, tutorials.class));
}
});

XML
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/button_send"
android:onClick="sendMessage" />
.Java class
/** Called when the user clicks the Send button */
public void sendMessage(View view) {
Intent intent = new Intent(this, YourActivityYouWantToOpen.class);
startActivity(intent);
}

Android Application Force Crash at main Activity Launch

I just started working on this application I feel like I've done everything right (This isn't my first application I've been working on) but when I try to run it It crashes?? It gives me no errors.
Here's the code from the main activity, then from manufest and then from the xml layout.
`
package com.theory.game;
import java.util.Random;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class GameTheoryActivity extends Activity implements View.OnClickListener{
Button play, settings;
int i;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play.setOnClickListener(this);
settings.setOnClickListener(this);
}
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.bPlay:
Random irand = new Random();
i = irand.nextInt(4);
switch(i){
case 0:
Intent GoMillionair = new Intent(GameTheoryActivity.this, millionair.class);
startActivity(GoMillionair);
return;
case 1:
return;
case 2:
return;
case 3:
return;
}
return;
case R.id.bSettings:
return;
}
}
}
Manufest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.theory.game"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="15" />
<application >
<activity
android:name=".GameTheoryActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".millionair" >
<intent-filter>
<action android:name="com.theory.game.MILLIONAIR" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#drawable/backgroundimage"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="390dp"
android:orientation="vertical" >
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<Button
android:id="#+id/bPlay"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.38"
android:background="#drawable/play" />
<Button
android:id="#+id/bSettings"
android:layout_width="match_parent"
android:layout_height="58dp"
android:layout_weight="0.36"
android:background="#drawable/settings" />
</LinearLayout>
</LinearLayout>
`
And I have another class called millionair which is just a normal class nothing much, nothing wrong there I guess. Please check whats up with this and let me know why my application wont start saying it "has stopped working".. Thanks

My guess is that you are getting a NullPointerException because both play and settings objects are null.
change your onCreate() to look like this:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play = (Button)findViewById(R.id.bPlay);
settings = (Button)findViewById(R.id.bSettings);
play.setOnClickListener(this);
settings.setOnClickListener(this);
}

You'll probably get a NullPointerException because you forgot to assign the buttons to your fields (Button play, settings;).
Here's an example on how to assign them:
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
play = (Button) findViewById(R.id.bPlay);
settings = (Button) findViewById(R.id.bSettings);
}

Looks like play and settings will both be null when you try to use then during the onCreate() method:
play.setOnClickListener(this);
settings.setOnClickListener(this);
make sure to initiate them like so:
play = (Button)findViewById(R.id.bPlay);
settings = (Button)findViewById(R.id.bSettings)
play.setOnClickListener(this);
settings.setOnClickListener(this);