Added credits-dialog

Changed SettingsScreen

app/src/main/java/de/frajul/endlessroll/views/CreditsDialog.java

@@ -0,0 +1,102 @@
+package de.frajul.endlessroll.views;
+
+import android.animation.ObjectAnimator;
+import android.app.Dialog;
+import android.os.Bundle;
+import android.support.annotation.IdRes;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.Window;
+import android.view.animation.Animation;
+import android.view.animation.AnimationUtils;
+import android.view.animation.LinearInterpolator;
+import android.widget.ImageView;
+import android.widget.ScrollView;
+import android.widget.TextView;
+
+import java.util.concurrent.locks.ReentrantLock;
+
+import de.frajul.endlessroll.R;
+import de.frajul.endlessroll.main.GameActivity;
+
+/**
+ * Created by Julian on 31.10.2017.
+ */
+
+public class CreditsDialog extends Dialog implements View.OnTouchListener {
+
+    private GameActivity gameActivity;
+
+    private ImageView ball;
+    private Animation rotation;
+    private ScrollView scrollView;
+    private ReentrantLock scrollViewAnimatorLock;
+    private ObjectAnimator scrollViewAnimator;
+
+    public CreditsDialog(GameActivity gameActivity) {
+        super(gameActivity);
+        this.gameActivity = gameActivity;
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        requestWindowFeature(Window.FEATURE_NO_TITLE);
+        setContentView(R.layout.credits_dialog);
+
+        setTypefaceToTextView(R.id.credits_title);
+        setTypefaceToTextView(R.id.credits_author);
+        setTypefaceToTextView(R.id.credits_testers_title);
+        setTypefaceToTextView(R.id.credits_testers);
+        setTypefaceToTextView(R.id.credits_sounds_title);
+        setTypefaceToTextView(R.id.credits_sounds);
+        setTypefaceToTextView(R.id.credits_music_title);
+        setTypefaceToTextView(R.id.credits_music);
+
+        ball = (ImageView) findViewById(R.id.credits_ball);
+        rotation = AnimationUtils.loadAnimation(gameActivity, R.anim.shape_button_rotation);
+        scrollView = ((ScrollView) findViewById(R.id.credits_scrollview));
+        scrollView.setOnTouchListener(this);
+        scrollViewAnimatorLock = new ReentrantLock();
+    }
+
+    private void setTypefaceToTextView(@IdRes int id) {
+        TextView textView = (TextView) findViewById(id);
+        textView.setTypeface(gameActivity.getTypeface());
+    }
+
+    @Override
+    public void show() {
+        super.show();
+        ball.startAnimation(rotation);
+        scrollView.post(new Runnable() {
+            @Override
+            public void run() {
+                scrollView.scrollTo(0, 0);
+
+                scrollViewAnimatorLock.lock();
+                try {
+                    scrollViewAnimator = ObjectAnimator
+                            .ofInt(scrollView, "scrollY", scrollView.getBottom());
+                    scrollViewAnimator.setDuration(8000);
+                    scrollViewAnimator.setInterpolator(new LinearInterpolator());
+                    scrollViewAnimator.start();
+                } finally {
+                    scrollViewAnimatorLock.unlock();
+                }
+            }
+        });
+    }
+
+    @Override
+    public boolean onTouch(View v, MotionEvent event) {
+        scrollViewAnimatorLock.lock();
+        try {
+            if (scrollViewAnimator != null)
+                scrollViewAnimator.cancel();
+        } finally {
+            scrollViewAnimatorLock.unlock();
+        }
+        return false;
+    }
+}