first version solarCast

app/src/main/java/org/woheller69/weather/firststart/TutorialActivity.java

@@ -0,0 +1,209 @@
+package org.woheller69.weather.firststart;
+
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Color;
+
+import android.os.Build;
+import android.os.Bundle;
+
+import androidx.viewpager.widget.PagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+import androidx.appcompat.app.AppCompatActivity;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.Window;
+import android.view.WindowManager;
+
+import android.widget.Button;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import org.woheller69.weather.R;
+import org.woheller69.weather.activities.ForecastCityActivity;
+import org.woheller69.weather.activities.SettingsActivity;
+
+
+/**
+ * Class structure taken from tutorial at http://www.androidhive.info/2016/05/android-build-intro-slider-app/
+ *
+ * @author Karola Marky
+ * @version 20161214
+ */
+
+public class TutorialActivity extends AppCompatActivity {
+
+    private ViewPager viewPager;
+    private MyViewPagerAdapter myViewPagerAdapter;
+    private LinearLayout dotsLayout;
+    private TextView[] dots;
+    private int[] layouts;
+    private Button btnNext;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        setContentView(R.layout.activity_tutorial);
+
+        viewPager = (ViewPager) findViewById(R.id.view_pager);
+        dotsLayout = (LinearLayout) findViewById(R.id.layoutDots);
+        btnNext = (Button) findViewById(R.id.btn_next);
+
+
+        // layouts of all welcome sliders
+        // add few more layouts if you want
+        layouts = new int[]{
+                R.layout.tutorial_slide1,
+                R.layout.tutorial_slide2,
+                R.layout.tutorial_slide3};
+
+        // adding bottom dots
+        addBottomDots(0);
+
+        // making notification bar transparent
+        changeStatusBarColor();
+
+        myViewPagerAdapter = new MyViewPagerAdapter();
+        viewPager.setAdapter(myViewPagerAdapter);
+        viewPager.addOnPageChangeListener(viewPagerPageChangeListener);
+
+
+
+        btnNext.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                // checking for last page
+                // if last page home screen will be launched
+                int current = getItem(+1);
+                if (current < layouts.length) {
+                    // move to next screen
+                    viewPager.setCurrentItem(current);
+                } else {
+                    launchSettings();
+                }
+            }
+        });
+
+    }
+
+
+    private void addBottomDots(int currentPage) {
+        dots = new TextView[layouts.length];
+
+        int[] colorsActive = getResources().getIntArray(R.array.array_dot_active);
+        int[] colorsInactive = getResources().getIntArray(R.array.array_dot_inactive);
+
+        dotsLayout.removeAllViews();
+        for (int i = 0; i < dots.length; i++) {
+            dots[i] = new TextView(this);
+            dots[i].setText("\u2022");
+            dots[i].setTextSize(35);
+            dots[i].setTextColor(colorsInactive[currentPage]);
+            dotsLayout.addView(dots[i]);
+        }
+
+        if (dots.length > 0)
+            dots[currentPage].setTextColor(colorsActive[currentPage]);
+    }
+
+    private int getItem(int i) {
+        return viewPager.getCurrentItem() + i;
+    }
+
+    private void launchHomeScreen() {
+        startActivity(new Intent(TutorialActivity.this, ForecastCityActivity.class));
+        finish();
+    }
+
+    private void launchSettings() {
+        startActivity(new Intent(TutorialActivity.this, SettingsActivity.class));
+        finish();
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+
+        viewPagerPageChangeListener.onPageSelected(viewPager.getCurrentItem());
+    }
+
+
+    //  viewpager change listener
+    ViewPager.OnPageChangeListener viewPagerPageChangeListener = new ViewPager.OnPageChangeListener() {
+
+        @Override
+        public void onPageSelected(int position) {
+            addBottomDots(position);
+
+            // changing the next button text 'NEXT' / 'GOT IT'
+            if (position == layouts.length - 1) {
+                // last page. make button text to GOT IT
+                btnNext.setText(getString(R.string.okay));
+            } else {
+                // still pages are left
+                btnNext.setText(getString(R.string.next));
+            }
+        }
+
+        @Override
+        public void onPageScrolled(int arg0, float arg1, int arg2) {
+
+        }
+
+        @Override
+        public void onPageScrollStateChanged(int arg0) {
+
+        }
+    };
+
+    /**
+     * Making notification bar transparent
+     */
+    private void changeStatusBarColor() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
+            Window window = getWindow();
+            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
+            window.setStatusBarColor(Color.TRANSPARENT);
+        }
+    }
+
+    /**
+     * View pager adapter
+     */
+    public class MyViewPagerAdapter extends PagerAdapter {
+        private LayoutInflater layoutInflater;
+
+        public MyViewPagerAdapter() {
+        }
+
+        @Override
+        public Object instantiateItem(ViewGroup container, int position) {
+            layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+
+            final View view = layoutInflater.inflate(layouts[position], container, false);
+
+            container.addView(view);
+
+            return view;
+        }
+
+        @Override
+        public int getCount() {
+            return layouts.length;
+        }
+
+        @Override
+        public boolean isViewFromObject(View view, Object obj) {
+            return view == obj;
+        }
+
+
+        @Override
+        public void destroyItem(ViewGroup container, int position, Object object) {
+            View view = (View) object;
+            container.removeView(view);
+        }
+    }
+}