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

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Here is the source code for com.beck.matthew.customtabs.TabPagerAdapter.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.content.Context;
import android.support.v4.view.PagerAdapter;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import java.util.Arrays;

public class TabPagerAdapter extends PagerAdapter {

    private Context mContext;
    ViewGroup[] layouts;

    public TabPagerAdapter(Context context) {
        mContext = context;
        layouts = new ViewGroup[PagerEnum.length()];
        Arrays.fill(layouts, null);
    }

    public Object instantiateItem(ViewGroup collection, int position) {
        PagerEnum pagerEnum = PagerEnum.values()[position];
        LayoutInflater inflater = LayoutInflater.from(mContext);
        ViewGroup layout;
        if (layouts[position] != null) {
            layout = layouts[position];// Here its just set to the previouse layout that was inflated
        } else {
            layout = (ViewGroup) inflater.inflate(pagerEnum.getLayoutResId(), collection, false);// inflates the layout
            layouts[position] = layout;// saves the layout in the array
            /*
            Here place any ListView adapters and initalize them.
            This is because of some bugs. Adapters that are updated in another class will have to have a static adapter
            */
        }
        collection.addView(layout);
        return layout;
    }

    @Override
    public void destroyItem(ViewGroup collection, int position, Object view) {
        collection.removeView((View) view);
    }

    @Override
    public int getCount() {
        return PagerEnum.values().length;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view == object;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        PagerEnum pagerEnum = PagerEnum.values()[position];
        return pagerEnum.getTitle();
    }
}