package com.example.mywork;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    private Fragment wechatFragment=new wechatFragment();
    private Fragment friendFragment=new friendFragment();
    private Fragment contactFragment=new contactFragment();
    private Fragment configFragment=new configFragment();

    private FragmentManager fragmentManager;

    private LinearLayout linearLayout1,linearLayout2,linearLayout3,linearLayout4;

    private ImageView imageView1,imageView2,imageView3,imageView4;
    private TextView textView1,textView2,textView3,textView4;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);  //取消默认title
        setContentView(R.layout.activity_main);

        linearLayout1=findViewById(R.id.LinearLayout_wechat);
        linearLayout2=findViewById(R.id.LinearLayout_friend);
        linearLayout3=findViewById(R.id.LinearLayout_contact);
        linearLayout4=findViewById(R.id.LinearLayout_config);

        linearLayout1.setOnClickListener(this);
        linearLayout2.setOnClickListener(this);
        linearLayout3.setOnClickListener(this);
        linearLayout4.setOnClickListener(this);

        imageView1=findViewById(R.id.imageView1);
        imageView2=findViewById(R.id.imageView2);
        imageView3=findViewById(R.id.imageView3);
        imageView4=findViewById(R.id.imageView4);

        textView1=findViewById(R.id.textView1);
        textView2=findViewById(R.id.textView2);
        textView3=findViewById(R.id.textView3);
        textView4=findViewById(R.id.textView4);

        initFragment();
    }

    //fragment标准化
    private void initFragment(){
        fragmentManager=getFragmentManager();
        FragmentTransaction transaction=fragmentManager.beginTransaction();  //开始交互控制
        transaction.add(R.id.id_content,wechatFragment);  //把fragment加入到id_content
        transaction.add(R.id.id_content,friendFragment);
        transaction.add(R.id.id_content,contactFragment);
        transaction.add(R.id.id_content,configFragment);
        //隐藏4个tag
        hideFragment(transaction);
        //或者  changeColor(0);showfragment(0); 显示微信聊天页面
        transaction.commit();
    }

    //tag页面的隐藏
    private void hideFragment(FragmentTransaction transaction){
        transaction.hide(wechatFragment);
        transaction.hide(friendFragment);
        transaction.hide(contactFragment);
        transaction.hide(configFragment);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.LinearLayout_wechat:
                changeColor(0);
                showfragment(0);
                break;
            case R.id.LinearLayout_friend:
                changeColor(1);
                showfragment(1);
                break;
            case R.id.LinearLayout_contact:
                changeColor(2);
                showfragment(2);
                break;
            case R.id.LinearLayout_config:
                changeColor(3);
                showfragment(3);
                break;
            default:
                break;
        }
    }

    //tag页面的显示
    private void showfragment(int i) {
        FragmentTransaction transaction=fragmentManager.beginTransaction();
        hideFragment(transaction);
        switch (i){
            case 0:
                transaction.show(wechatFragment);
                break;
            case 1:
                transaction.show(friendFragment);
                break;
            case 2:
                transaction.show(contactFragment);
                break;
            case 3:
                transaction.show(configFragment);
                break;
            default:
                break;
        }
        transaction.commit();
    }

    //改变Layout颜色
    private void changeColor(int i){
        imageView1.setImageResource(R.drawable.wechat2);
        imageView2.setImageResource(R.drawable.friend2);
        imageView3.setImageResource(R.drawable.contact2);
        imageView4.setImageResource(R.drawable.config2);
        textView1.setTextColor(Color.rgb(255, 255, 255));
        textView2.setTextColor(Color.rgb(255, 255, 255));
        textView3.setTextColor(Color.rgb(255, 255, 255));
        textView4.setTextColor(Color.rgb(255, 255, 255));
        switch (i){
            case 0:
                imageView1.setImageResource(R.drawable.wechat1);
                textView1.setTextColor(Color.rgb(26,250,41));
                break;
            case 1:
                imageView2.setImageResource(R.drawable.friend1);
                textView2.setTextColor(Color.rgb(26,250,41));
                break;
            case 2:
                imageView3.setImageResource(R.drawable.contact1);
                textView3.setTextColor(Color.rgb(26,250,41));
                break;
            case 3:
                imageView4.setImageResource(R.drawable.config1);
                textView4.setTextColor(Color.rgb(26,250,41));
                break;
            default:
                break;
        }
    }
}