android动态替换Fragment向下传递数据

以前传递数据都是使用Intent进行传递，但是intent是跳转，我们这个是动态替换 所以刚开始也是一脸懵逼，百度也百度不到，就自己慢慢摸索出来了：

话不多说，直接上代码：(主要核心代码加粗)

package com.smartgentechnology;import android.content.Intent;import android.support.v4.app.Fragment;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.TextView;

public class HomePage extends AppCompatActivity implements View.OnClickListener {//动态替换碎片    private TextView tab1, tab2, tab3, user;    private String jurisdiction;

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

        Intent intentHome = getIntent();        jurisdiction = intentHome.getStringExtra("importid");        String username = intentHome.getStringExtra("importname");        user = findViewById(R.id.home_name);        user.setText(username);        initView();//初始化数据    }

    private void initView() {        tab1 = findViewById(R.id.set);        tab2 = findViewById(R.id.statement);        tab3 = findViewById(R.id.repaire);        tab1.setOnClickListener(this);        tab2.setOnClickListener(this);        tab3.setOnClickListener(this);        tab1.setSelected(true);        replaceFragment(new BasicSetting(), jurisdiction);    }

    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.set:                selected();                tab1.setSelected(true);                replaceFragment(new BasicSetting(), jurisdiction);                break;            case R.id.statement:                selected();                tab2.setSelected(true);                replaceFragment(new Report(), jurisdiction);                break;            case R.id.repaire:                selected();                tab3.setSelected(true);                replaceFragment(new RepairModule(), jurisdiction);                break;        }    }

    private void replaceFragment(Fragment fragment, String uid) {        FragmentManager fragmentManager = getSupportFragmentManager();        FragmentTransaction transaction = fragmentManager.beginTransaction();        transaction.replace(R.id.main_fragment, fragment);        Bundle bundle = new Bundle();//使用Bundle传递数据        bundle.putString("msg", uid);        fragment.setArguments(bundle);        transaction.commit();    }

    private void selected() {//初始化是否选中的状态        tab1.setSelected(false);        tab2.setSelected(false);        tab3.setSelected(false);    }}

在碎片中接收数据：

//获得窗体传递来的数据Bundle bundle= BasicSetting.this.getArguments();//显示传递来的数据String uid = bundle.getString("msg");//Log.i("chulaiba",bundle.getString("msg"));

原文地址：https://www.cnblogs.com/yh0409/p/10818582.html