[英]How to open a Fragment on button click from a fragment in Android
I have some button on my HomeFragment i want to to open a Fragment on button click from a fragment .我的 HomeFragment 上有一些按钮,我想在单击一个片段的按钮时打开一个片段。 Something like Navigation.
类似导航的东西。 I am trying with bellow code but did not worked.
我正在尝试使用波纹管代码,但没有奏效。 Please help !
请帮忙 ! I am very new to android and trying to learn new things.
我对android很陌生,正在尝试学习新事物。
Here is My code这是我的代码
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
public class HomeFragment extends Fragment {
public HomeFragment(){}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
Button aboutBtn = (Button) rootView.findViewById(R.id.aboutusButton);
Button phonebookBtn = (Button) rootView.findViewById(R.id.phbookButton);
Button schemeBtn = (Button) rootView.findViewById(R.id.schemeButton);
Button loanBtn = (Button) rootView.findViewById(R.id.loanButton);
Button serviceBtn = (Button) rootView.findViewById(R.id.serviceButton);
Button devBtn = (Button) rootView.findViewById(R.id.devButton);
aboutBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent i = new Intent(getActivity(), AboutFragment.class);
startActivity(i);
}
});
phonebookBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent j = new Intent(getActivity(), PhoneBookFragment.class);
startActivity(j);
}
});
schemeBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent k = new Intent(getActivity(), HomeFragment.class);
startActivity(k);
}
});
loanBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent l = new Intent(getActivity(), RemittanceFragment.class);
startActivity(l);
}
});
serviceBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent m = new Intent(getActivity(), ServiceFragment.class);
startActivity(m);
}
});
devBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
// Launching new Activity on selecting single List Item
Intent n = new Intent(getActivity(), AboutDeveloper.class);
startActivity(n);
}
});
return rootView;
}
}
I am looking for something like bellow code but don't know how to make the code works with my code.我正在寻找类似波纹管代码的东西,但不知道如何使代码与我的代码一起使用。
Button aboutBtn = (Button) v.findViewById(R.id.aboutButton);
aboutBtn.setOnClickListener(this);
Button homeBtn = (Button) v.findViewById(R.id.homeButton);
homeButton.setOnClickListener(this);
Button serviceBtn = (Button) v.findViewById(R.id.serviceButton);
serviceBtn.setOnClickListener(this);
@Override
public void onClick(View view) {
Fragment fragment = null;
switch (view.getId()) {
case aboutButton:
fragment = new AboutFragment();
break;
case homeBtn:
fragment = new PhonebookFragment();
break;
case serviceBtn:
fragment = new ServiceFragment();
break;
default:
fragment = new HomeFragment();
break;
}
}
You can replace the fragment using FragmentTransaction on button click.您可以在单击按钮时使用 FragmentTransaction 替换片段。 Something like this:
像这样的东西:
Fragment someFragment = new SomeFragment();
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, someFragment ); // give your fragment container id in first parameter
transaction.addToBackStack(null); // if written, this transaction will be added to backstack
transaction.commit();
Learn about performing fragment transactions here. 在此处了解如何执行片段事务。
code:代码:
package com.rupomkhondaker.sonalibank;
import android.app.Fragment;
import android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
public class HomeFragment extends Fragment implements View.OnClickListener {
public HomeFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_home, container, false);
Button aboutBtn = (Button) rootView.findViewById(R.id.aboutusButton);
Button phonebookBtn = (Button) rootView.findViewById(R.id.phbookButton);
aboutBtn.setOnClickListener(this);
phonebookBtn.setOnClickListener(this);
return rootView;
}
@Override
public void onClick(View view) {
Fragment fragment = null;
switch (view.getId()) {
case R.id.aboutusButton:
fragment = new AboutFragment();
replaceFragment(fragment);
break;
case R.id.phbookButton:
fragment = new PhoneBookFragment();
replaceFragment(fragment);
break;
}
}
public void replaceFragment(Fragment someFragment) {
FragmentTransaction transaction = getFragmentManager().beginTransaction();
transaction.replace(R.id.frame_container, someFragment);
transaction.addToBackStack(null);
transaction.commit();
}
}
I have a simple trick to it!我有一个简单的技巧! This is the code in MainActivity:
这是 MainActivity 中的代码:
Intent intent=new Intent(getApplicationContext(),Main2Activity.class);
intent.putExtra("pos",1);
startActivity(intent);
Intent intent1=new Intent(getApplicationContext(),Main2Activity.class);
intent1.putExtra("pos",2);
startActivity(intent1);
In Main2Activity which is a NavigationDrawer with fragments在 Main2Activity 中,这是一个带有片段的 NavigationDrawer
Bundle extras;
extras=getIntent().getExtras();
if(extras!=null)
{
position=extras.getInt("pos");
if(position==1)
{
fragment=new FragmentOne();
if(fragment !=null)
{
android.support.v4.app.FragmentManager fragmentManager=getSupportFragmentManager();
FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.screen_area,fragment);
fragmentTransaction.commit();
}
}
if(position==2)
{
fragment=new FragmentTwo();
if(fragment !=null)
{
android.support.v4.app.FragmentManager fragmentManager=getSupportFragmentManager();
FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.screen_area,fragment);
fragmentTransaction.commit();
}
}
}
Kotlin example:科特林示例:
fun FragmentActivity.replaceFragment(fragment: Fragment, frameId: Int = R.id.fragment_container, addToStack: Boolean) {
val doesFragmentAlreadyExists = supportFragmentManager.findFragmentByTag(fragment.javaClass.simpleName) != null
if (!doesFragmentAlreadyExists) {
supportFragmentManager.inTransaction {
if (addToStack) replace(frameId, fragment, fragment.javaClass.simpleName)
.addToBackStack(fragment.javaClass.simpleName)
else
replace(frameId, fragment, fragment.javaClass.simpleName)
}
}}
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