Android从Fragment跳转到其他Activity的简单实例

为了更好的理解以下内容，我们需要简单了解⼀下Fragment的动态注册⽅法为了实现从Fragment跳转到其他Activity，下⾯需要创建以下⽂件：

第⼀步：简单编写布局⽂件fragment_activity.xml和抽象类TemplateFragmentActivity.java代码如下：fragment_activity.xml

fragment_activity.xml布局主要⽤于承载各fragment布局，例如fragment_one.xml和fragment_two.xml。TemplateFragmentActivity.java

package com.example.myapplication;import android.os.Bundle;

import androidx.annotation.Nullable;

import androidx.appcompat.app.AppCompatActivity;import androidx.fragment.app.Fragment;

import androidx.fragment.app.FragmentManager;import androidx.fragment.app.FragmentTransaction;

public abstract class TemplateFragmentActivity extends AppCompatActivity{

private FragmentManager fm; private FragmentTransaction ts; private Fragment fragment;

//抽象⽅法，⽤于创建Fragment实例

protected abstract Fragment createFragment(); @Override

protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState);

setContentView(R.layout.fragment_activity); fm = getSupportFragmentManager(); ts = fm.beginTransaction(); if (fragment == null){

fragment = createFragment();

ts.add(R.id.temp_fragment_activity,fragment); ts.commit(); } }}

第⼆步：分别使类FragmentOneActivity和FragmentTwoActivity继承类TemplateFragmentActivity并实现抽象⽅法createFragment()FragmentOneActivity.java

package com.example.myapplication;import androidx.fragment.app.Fragment;

public class FragmentOneActivity extends TemplateFragmentActivity { @Override

protected Fragment createFragment() { return new FragmentOne(); }}

FragmentTwoActivity.java与FragmentOneActivity.java类似，不在重复。

第三步：分别编写fragment_one.xml和fragment_two.xml布局⽂件并通过编写FragmentOne.java和FragmentTwo.java绑定对应的布局⽂件，并实现其具体功能。fragment_one.xml

android:background=\"@color/colorPrimaryDark\" android:orientation=\"vertical\"> android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:gravity=\"center\"

android:text=\"点击下⾯的按钮跳转到FragmentTwoActivity\" android:textSize=\"20sp\" android:textAllCaps=\"false\" android:textColor=\"#F70505\"> android:id=\"@+id/btn_fm_one\"

android:layout_width=\"wrap_content\" android:layout_height=\"wrap_content\" android:text=\"跳转\"

android:textSize=\"30dp\"

android:layout_marginTop=\"20dp\">

fragment_two.xml与fragment_one.xml类似，不在重复。FragmentOne.java

package com.example.myapplication;import android.content.Intent;import android.os.Bundle;

import android.view.LayoutInflater;import android.view.View;

import android.view.ViewGroup;import android.widget.Button;

import androidx.annotation.NonNull;import androidx.annotation.Nullable;import androidx.fragment.app.Fragment;

public class FragmentOne extends Fragment { private Button mBtnFragmentOne; @Nullable @Override

public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,

@Nullable Bundle savedInstanceState) {

View view = inflater.inflate(R.layout.fragment_one,container,false); mBtnFragmentOne = view.findViewById(R.id.btn_fm_one);

mBtnFragmentOne.setOnClickListener(new View.OnClickListener() { @Override

public void onClick(View v) {

Intent intent = new Intent(getActivity(),FragmentTwoActivity.class); startActivity(intent); } });

return view; }}

Fragment跳转到Activity与Activity跳转到Activity⽅法类似，如下：

Intent intent = new Intent(getActivity(),FragmentTwoActivity.class);startActivity(intent);

FragmentTwo.java与FragmentOne .java类似，不在重复。演⽰·：总结

以上所述是⼩编给⼤家介绍的Android从Fragment跳转到其他Activity的简单实例，希望对⼤家有所帮助！