我的 HomeFragment 上有一些按钮,我想在从 fragment 单击按钮时打开 fragment 。类似导航的东西。我正在尝试使用以下代码,但没有奏效。请帮忙 !我对 android 很陌生,正在尝试学习新事物。
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;
}
}
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;
}
}
最佳答案
您可以在单击按钮时使用 FragmentTransaction 替换 fragment 。像这样的:
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();
了解 performing fragment transactions here.
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();
}
}
关于android - 如何从Android中的 fragment 单击按钮打开 fragment ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32700818/