com.learnncode.tabsample.BaseActivity.java Source code

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Here is the source code for com.learnncode.tabsample.BaseActivity.java

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/*
 * Copyright 2013 - learnNcode (learnncode@gmail.com)
 * 
 * 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.learnncode.tabsample;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTabHost;
import android.view.Gravity;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TabHost.OnTabChangeListener;
import android.widget.TextView;

import com.learnncode.tabsample.fragment.TabOneFrgment;
import com.learnncode.tabsample.fragment.TabTwoFrgment;

public class BaseActivity extends FragmentActivity {

    private FragmentTabHost mTabHost;

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

        mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
        mTabHost.setup(this, getSupportFragmentManager(), android.R.id.tabcontent);
        mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator(getResources().getString(R.string.tab_one)),
                TabOneFrgment.class, null);
        mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator(getResources().getString(R.string.tab_two)),
                TabTwoFrgment.class, null);

        mTabHost.setCurrentTabByTag("tag2");

        for (int i = 0; i < mTabHost.getTabWidget().getChildCount(); i++) {

            TextView textView = (TextView) mTabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title);
            if (textView.getLayoutParams() instanceof RelativeLayout.LayoutParams) {

                RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) textView
                        .getLayoutParams();
                params.addRule(RelativeLayout.CENTER_HORIZONTAL);
                params.addRule(RelativeLayout.CENTER_VERTICAL);
                params.height = RelativeLayout.LayoutParams.MATCH_PARENT;
                params.width = RelativeLayout.LayoutParams.WRAP_CONTENT;
                mTabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title).setLayoutParams(params);

            } else if (textView.getLayoutParams() instanceof LinearLayout.LayoutParams) {
                LinearLayout.LayoutParams params = (android.widget.LinearLayout.LayoutParams) textView
                        .getLayoutParams();
                params.gravity = Gravity.CENTER;
                mTabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title).setLayoutParams(params);
            }
        }

        mTabHost.setOnTabChangedListener(new OnTabChangeListener() {

            @Override
            public void onTabChanged(String tabId) {

                android.support.v4.app.FragmentManager fragmentManager = getSupportFragmentManager();
                TabOneFrgment tabOneFrgment = (TabOneFrgment) fragmentManager.findFragmentByTag("tab1");
                TabTwoFrgment tabTwoFrgment = (TabTwoFrgment) fragmentManager.findFragmentByTag("tab2");
                android.support.v4.app.FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

                if (tabId.equalsIgnoreCase("tab1")) {
                    if (tabOneFrgment != null) {
                        if (tabTwoFrgment != null) {
                            fragmentTransaction.hide(tabTwoFrgment);
                        }
                        fragmentTransaction.show(tabOneFrgment);
                    }
                } else {
                    if (tabTwoFrgment != null) {
                        if (tabOneFrgment != null) {
                            fragmentTransaction.hide(tabOneFrgment);
                        }
                        fragmentTransaction.show(tabTwoFrgment);
                    }
                }
                fragmentTransaction.commit();
            }
        });
    }
}