com.beck.matthew.customtabs.MainActivity.java Source code

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Here is the source code for com.beck.matthew.customtabs.MainActivity.java

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/**
Copyright 2016 mattwolf1234
    
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
    
http://www.apache.org/licenses/LICENSE-2.0
    
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
**/
package com.beck.matthew.customtabs;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.content.Context;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.TabHost;
import android.support.v4.view.ViewPager;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import java.util.Arrays;

public class MainActivity extends Activity {

    private TabHost tabHost;
    private ViewPager viewPager;
    boolean[] hasOpened;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tabHost = (TabHost) findViewById(android.R.id.tabhost);
        tabHost.setup();

        setupTab("Tab1", R.id.tab1, R.mipmap.ic_launcher);
        setupTab("Tab 2", R.id.tab2, R.mipmap.ic_launcher);

        tabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {
            public void onTabChanged(String tabId) {
                viewPager.setCurrentItem(tabHost.getCurrentTab());
            }
        });

        viewPager = (ViewPager) findViewById(R.id.viewpager);
        viewPager.setAdapter(new TabPagerAdapter(this));
        viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
                //ignore
            }

            @Override
            public void onPageSelected(int position) {
                tabHost.setCurrentTab(position);
            }

            @Override
            public void onPageScrollStateChanged(int state) {
                //ignore
            }
        });
        viewPager.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {// The point of initailizing everything here is because not every layout is made
            @Override
            public void onLayoutChange(View view, int i, int i1, int i2, int i3, int i4, int i5, int i6, int i7) {
                int current = viewPager.getCurrentItem();
                if (current == 0) {
                    if (hasOpened[current]) {
                        // initalize any objects, buttons, views here
                        // any listviews and adapters have to be initalized in the TabPagerAdapter class
                        // you can just create a static object to access it from mainactivity
                    }
                } else if (current == 1) {
                    if (hasOpened[current]) {

                    }
                }
            }
        });

        hasOpened = new boolean[PagerEnum.length()];
        Arrays.fill(hasOpened, true);
    }

    private void setupTab(final String tag, int layout, int imageResource) {
        View tabView = createTabView(tabHost.getContext(), tag, imageResource);
        TabHost.TabSpec setContent = tabHost.newTabSpec(tag).setIndicator(tabView).setContent(layout);
        tabHost.addTab(setContent);
    }

    private static View createTabView(final Context context, final String text, int imageResource) {
        @SuppressLint("InflateParams")
        View view = LayoutInflater.from(context).inflate(R.layout.tab_layout, null);
        TextView textView = (TextView) view.findViewById(R.id.tabsText);
        textView.setText(text);
        ImageView imageView = (ImageView) view.findViewById(R.id.tabsImage);
        imageView.setImageResource(imageResource);
        return view;
    }

    @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);
    }
}