移动开发新手上路，第一个手机端微信界面Demo
本文是我根据所学习到的移动开发知识，跟着老师上课写的第一个小项目。是一个手机端微信界面的框架，下面附上MainActivity的java代码供大家参考。文末附上完整代码的gitee地址。
下面是MainActivity文件代码。
package com.example.weChat;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.content.DialogInterface;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.widget.FrameLayout;
import android.widget.ImageButton;
import android.widget.LinearLayout;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private Fragment mtab01=new weixinFragment();
private Fragment mtab02=new friendFragment();
private Fragment mtab03=new contactFragment();
private Fragment mtab04=new setFragment();
private FragmentManager fm;
private LinearLayout mtabweixin;
private LinearLayout mtabfrd;
private LinearLayout mtabaddress;
private LinearLayout mtabset;
private ImageButton mimgweixin;
private ImageButton mimgfrd;
private ImageButton mimgaddress;
private ImageButton mimgset;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initFragment();
initEvent();
selectfragment(0);
}
private void initFragment(){
fm=getSupportFragmentManager();
FragmentTransaction transaction=fm.beginTransaction();
transaction.add(R.id.id_content,mtab01);
transaction.add(R.id.id_content,mtab02);
transaction.add(R.id.id_content,mtab03);
transaction.add(R.id.id_content,mtab04);
transaction.commit();
}
private void initView(){
mtabweixin=(LinearLayout) findViewById(R.id.weixin);
mtabfrd=(LinearLayout) findViewById(R.id.frd);
mtabaddress=(LinearLayout) findViewById(R.id.contact);
mtabset=(LinearLayout) findViewById(R.id.setting);
mimgweixin=findViewById(R.id.imageButton1);
mimgfrd=findViewById(R.id.imageButton2);
mimgaddress=findViewById(R.id.imageButton3);
mimgset=findViewById(R.id.imageButton4);
}
private void initEvent(){
mtabweixin.setOnClickListener(this);
mtabfrd.setOnClickListener(this);
mtabaddress.setOnClickListener(this);
mtabset.setOnClickListener(this);
}
private void hidefragment(FragmentTransaction transaction){
transaction.hide(mtab01);
transaction.hide(mtab02);
transaction.hide(mtab03);
transaction.hide(mtab04);
}
private void selectfragment(int i){
FragmentTransaction transaction=fm.beginTransaction();
hidefragment(transaction);
switch (i){
case 0:
transaction.show(mtab01);
mimgweixin.setImageResource(R.drawable.tab_weixin_pressed);
break;
case 1:
transaction.show(mtab02);
mimgfrd.setImageResource(R.drawable.tab_find_frd_pressed);
break;
case 2:
transaction.show(mtab03);
mimgaddress.setImageResource(R.drawable.tab_address_pressed);
break;
case 3:
transaction.show(mtab04);
mimgset.setImageResource(R.drawable.tab_settings_pressed);
break;
default:
break;
}
transaction.commit();
}
@Override
public void onClick(View v){
resetimg();
switch (v.getId()){
case R.id.imageButton1:
selectfragment(0);
System.out.println(v.getId());
break;
case R.id.imageButton2:
selectfragment(1);
break;
case R.id.imageButton3:
selectfragment(2);
break;
case R.id.imageButton4:
selectfragment(3);
break;
default:
break;
}
}
public void resetimg(){
mimgweixin.setImageResource(R.drawable.tab_weixin_normal);
mimgfrd.setImageResource(R.drawable.tab_find_frd_normal);
mimgaddress.setImageResource(R.drawable.tab_address_normal);
mimgset.setImageResource(R.drawable.tab_settings_normal);
}
}
最后附上完整代码的gitee地址：https://gitee.com/Viviv123/weChat_Android-Studio/tree/master
作者：Viviv.
