We Keep Coding

Android studio - some of the interpolator animations not working

I am trying to apply animations to my project, when I set the interpolator to:
alpha.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/bounce_interpolator">
<alpha android:fromAlpha="0"
android:toAlpha="1"
android:duration="4000"
/>
</set>
SplashActivity.java:
package com.example.animationtesting;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.TextView;
public class SplashActivity extends AppCompatActivity {
ImageView imageView;
TextView textView;
Animation alpha;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
imageView = findViewById(R.id.imageView);
textView = findViewById(R.id.textView);
alpha = AnimationUtils.loadAnimation(this,R.anim.alpha);
imageView.setAnimation(alpha);
textView.setAnimation(alpha);
new Handler().postDelayed(new Runnable() {
#Override
public void run() {
Intent intent = new Intent(SplashActivity.this,MainActivity.class);
startActivity(intent);
finish();
}
},4000);
}
}
Android Manifest file:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<application
android:allowBackup="true"
android:dataExtractionRules="#xml/data_extraction_rules"
android:fullBackupContent="#xml/backup_rules"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:roundIcon="#mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="#style/Theme.AnimationTesting"
tools:targetApi="31">
<activity
android:name=".SplashActivity"
android:exported="true"
android:theme="#style/Theme.AppCompat.Light.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
<activity
android:name=".MainActivity"
android:exported="true">
<meta-data
android:name="android.app.lib_name"
android:value="" />
</activity>
</application>
</manifest>
The code is working fine when I set the interpolator as bounce_interpolator, accelerate_interpolator, anticipate_overshoot_interpolator but when I set the interpolator to other options like fade_in, fade_out,slide_out_right my app crashes. I don't get why this is happening.

First I thought your app crashed because you try to put the animation on two different xml-objects, but then I replicated the entire thing using this guide and for me, everything is working. (Although I did it using Kotlin).
I'm sorry, the only solution I could provide was this URL to the guide, but if you have any more questions, feel free to ask!

How can I stop my Android webview app from refreshing when I rotate my phone?

I am trying to complete my org's first app (we lost our dev due to health issues) and it seems to be working except that when the phone is rotated it refreshes back to the login screen. I realize that this question was answered previously here but this information is 4 years old and I get some compiling errors.
Here is our code - I really hope that someone can help as I am completely new to this and not really a dev myself, but I feel like what we have is close to a solution.
Manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ca.ruffarc.flytest">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<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>
Main Activity:
package ca.ruffarc.flytest;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
private WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webview);
webView.setWebViewClient(new MyBrowser());
webView.getSettings().setLoadsImagesAutomatically(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.loadUrl("https://flyapp.ca/en/authentication");
}
private class MyBrowser extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else
{
finish();
}
return super.onKeyDown(keyCode, event);
}
}

If you look at the AndroidManifest.xml from the link you gave you will see that <activity> has property android:configChanges="orientation|keyboardHidden".
So you need to do the same for your activity in the manifest with small difference:
android:configChanges="orientation|screenSize|keyboardHidden".
Here's a full example of Manifest.xml:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ca.ruffarc.flytest">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<activity android:name=".MainActivity"
android:configChanges="orientation|screenSize|keyboardHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Youtube/video playback in a android webview app

I recently made a website (www.fruitboompje.com).
Now I am trying to make a mobile android app for my website.
The mobile version of the site works great in chrome!
But with this test app I have now it will not load the video/music...
Can somebody help me with this?
MainActivity.java
package com.fruitboompje.music;
import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MainActivity extends AppCompatActivity {
private WebView mWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mWebView.loadUrl("http://www.fruitboompje.com/");
mWebView.setWebViewClient(new WebViewClient());
mWebView.setWebViewClient(new MyAppWebViewClient());
}
}
This is my AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fruitboompje.music">
<application
android:allowBackup="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:supportsRtl="true"
android:hardwareAccelerated="true"
android:theme="#style/Theme.AppCompat.NoActionBar">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
<uses-permission android:name="android.permission.INTERNET" />
</manifest>

Thank you for helping Shark! Adding the YouTube API worked fine for me!

Cannot Launch an Activity on touching anywhere in Main Activity

Could please someone lend me a hand? I've been struggling with this problem for hours. I have a Main and Start activity, the Main is the Launcher with a bunch of information (TextViews), it should transit into Start activity as soon as someone touches the screen. I found some info on stack overflow on how to do this (setting the onTouchListener() on relative layout) however it does not work for me, so everytime I try with:
RelativeLayout layout= (RelativeLayout)findViewById(R.id.relativeLayout1);
layout.setOnTouchListener(this);
it tells me to cast 'this' to 'OnTouchListener' and here's the outcome:
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View.OnTouchListener;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
TextView display1;
TextView display2;
TextView display3;
TextView display4;
ImageView image1;
RelativeLayout layout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.start_screen);
getActionBar().setTitle("AutoSMS");
RelativeLayout layout= (RelativeLayout)findViewById(R.id.relativeLayout1);
layout.setOnTouchListener((OnTouchListener) this);
display1 = (TextView) findViewById(R.id.textView1);
display2 = (TextView) findViewById(R.id.textView2);
display3 = (TextView) findViewById(R.id.textView3);
display4 = (TextView) findViewById(R.id.textView4);
image1 = (ImageView) findViewById(R.id.imageView2);
Intent openStarting = new Intent("android.intent.action.MAIN");
startActivity(openStarting);
}
}
Here's the Manifest, just in case
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.autosms"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="15"
android:targetSdkVersion="15" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name=".Start"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.START" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".End"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.END" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
The DDMS gives me ClassCastException, MainActivity cannot be cast to ViewOnTouchListener
Any help would be GREATLY appreciated!

You can either implement your whole activity to be an onTouchListener or create a new onTouchListener when you add it. Like
public class myActivity extends Activity implements onTouchListener
or
thisObject.add(new onTouchListener(){
//TODO: Add code
});
There is no need to cast your Activity as an onTouchListener when it isn't. Casting is when you get the certain value of something if it's possible like if you have a double and you want to get it's value as an int. You just need to make a new onTouchListener or turn your activity into one because you don't have any.

Intent using thread is not working

I know I already asked this, but I didn't get a sufficient answer. Im trying to start an activity, but the emulator stays on the first activity. Ive tried all ways to do it but it never works. The youtube videos show that it should work but it never does. Is there something missing or is there anything wrong with the following code?
//First Activity:
package com.mtprogramming.magicsquaresgame;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.content.Intent;
public class Opening extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_opening);
Thread timer = new Thread(){
public void run(){
try{
sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();
}finally{
Intent open = new Intent("com.mtprogramming.magicsquaresgame.MENU");
startActivity(open);
}
}
};
timer.start();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.opening, menu);
return true;
}
}
//Second Activity:
package com.mtprogramming.magicsquaresgame;
import android.app.Activity;
import android.os.Bundle;
//Created by suprav on 7/11/13.
public class Menu extends Activity {
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
}
}
//Android Manifest:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mtprogramming.magicsquaresgame"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.mtprogramming.magicsquaresgame.Opening"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.mtprogramming.magicsquaresgame.Menu"
android:label="#string/title_activity_menu"
android:parentActivityName="Opening" >
<intent-filter>
<action android:name="com.mtprogramming.magicsquaresgame.MENU"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="Opening" />
</activity>
</application>
</manifest>

Try this:
Intent open = new Intent(Opening.this, Menu.class);
startActivity(open);

I think i found the issue, seems like metadata property is not being properly used, hences activity its not being started, this is the proper way to use the property:
<activity android:name=".TestActivity" >
<meta-data android:name="android.support.PARENT_ACTIVITY"
android:value=".TestParentActivity">
</meta-data>
</activity>
So, seems like you are missing a dot in "android:value="Opening"
Regards!