安卓开发：fragment里面listview开始监听后，为何底部导航失效？
我做了底部导航，第二，第三之间可以切换
第一个用replace开了一个界面，里面有个listview 用了OnItemClickListener
结果是一旦第一个fragment加载，那么listview 可以监听
但是底部菜单全部失效，点哪里都是listview 响应 ！
下面是MainActivity
package com.example.hello2;
import android.Manifest;
import android.app.Activity;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.StrictMode;
import android.text.format.DateUtils;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.example.hello2.activity.imageseg.StillCutPhotoActivity;
import com.example.hello2.ui.PictureLoader;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import androidx.appcompat.app.AppCompatActivity;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;
import com.example.hello2.databinding.ActivityMainBinding;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.Signature;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private RelativeLayout fra1;
private RelativeLayout fra2;
private RelativeLayout fra3;
private RelativeLayout fra4;
private FragmentTransaction transaction =null;
private FragmentManager fm=null ;
private afra1 afra1;
private afra2 afra2;
private afra3 afra3;
private static final String TAG ="";
private ActivityMainBinding binding;
private Button showBtn;
private ImageView showImg;
private ArrayList<String> urls;
private int curPos = 0;
private PictureLoader loader;
private TextView txt_title;
private FrameLayout fl_content;
private Context mContext;
private ArrayList<afra1_Data> datas = null;
//private android.app.FragmentManager fManager = null;
private long exitTime = 0;
public static String accessKey = ".........012"; //取值为获取的AK
public static String securityKey = "..............012"; //取值为获取的SK
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// http 不执行问题
StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()
//.detectDiskReads()
//.detectDiskWrites()
//.detectNetwork() // or .detectAll() for all detectable problems
.penaltyLog()
.build());
StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder()
.detectLeakedSqlLiteObjects()
.detectLeakedClosableObjects()
.penaltyLog()
.penaltyDeath()
.build());
// http 不执行问题 END
binding = ActivityMainBinding.inflate(getLayoutInflater());
setContentView(binding.getRoot());
// BottomNavigationView navView = findViewById(R.id.nav_view);
// Passing each menu ID as a set of Ids because each
// menu should be considered as top level destinations.
AppBarConfiguration appBarConfiguration = new AppBarConfiguration.Builder(
R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications)
.build();
//NavController navController = Navigation.findNavController(this, R.id.nav_host_fragment_activity_main);
//NavigationUI.setupActionBarWithNavController(this, navController, appBarConfiguration);
//NavigationUI.setupWithNavController(binding.navView, navController);
//申请权限
if (Build.VERSION.SDK_INT >= 23) {
int REQUEST_CODE_CONTACT = 101;
String[] permissions = {Manifest.permission.READ_EXTERNAL_STORAGE};
//验证是否许可权限
for (String str : permissions) {
if (this.checkSelfPermission(str) != PackageManager.PERMISSION_GRANTED) {
//申请权限
this.requestPermissions(permissions, REQUEST_CODE_CONTACT);
}
}
}
setContentView(R.layout.activity_main);
loader = new PictureLoader();
initData();
initUI();
initView();
//try {
// ObsPut.main(new String[]{"", ""});
//}
//catch (Exception e)
//{
//}
}
private void initData() {
urls = new ArrayList<>();
urls.add("http://ww4.sinaimg.cn/large/610dc034jw1f6ipaai7wgj20dw0kugp4.jpg");
urls.add("http://ww3.sinaimg.cn/large/610dc034jw1f6gcxc1t7vj20hs0hsgo1.jpg");
urls.add("http://ww4.sinaimg.cn/large/610dc034jw1f6f5ktcyk0j20u011hacg.jpg");
urls.add("http://ww1.sinaimg.cn/large/610dc034jw1f6e1f1qmg3j20u00u0djp.jpg");
urls.add("http://ww3.sinaimg.cn/large/610dc034jw1f6aipo68yvj20qo0qoaee.jpg");
urls.add("http://ww3.sinaimg.cn/large/610dc034jw1f69c9e22xjj20u011hjuu.jpg");
urls.add("http://ww3.sinaimg.cn/large/610dc034jw1f689lmaf7qj20u00u00v7.jpg");
urls.add("http://ww3.sinaimg.cn/large/c85e4a5cjw1f671i8gt1rj20vy0vydsz.jpg");
urls.add("http://ww2.sinaimg.cn/large/610dc034jw1f65f0oqodoj20qo0hntc9.jpg");
urls.add("http://ww2.sinaimg.cn/large/c85e4a5cgw1f62hzfvzwwj20hs0qogpo.jpg");
}
private void initView() {
this.fra1 = this.findViewById(R.id.fra1); //选本人照按钮
this.fra2 = this.findViewById(R.id.fra2); //剪切按钮
this.fra3 = this.findViewById(R.id.fra3); //换背景
this.fra4 = this.findViewById(R.id.fra4); //存盘
fm = getSupportFragmentManager();
//fm = getFragmentManager();
setDefaultFragment();
fra1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i(TAG, "点击第1选项");
//super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = MainActivity.this;
//fManager = getFragmentManager();
datas = new ArrayList<afra1_Data>();
for (int i = 1; i <= 10; i++) {
afra1_Data data = new afra1_Data(urls.get(i - 1), i + "~新闻内容~~~~~~~~");
datas.add(data);
}
//android.app.FragmentTransaction ft = fManager.beginTransaction();
//afra1 = new afra1(fManager, datas);
//ft.replace(R.id.fl_content, afra1);
//ft.commit();
Log.i(TAG, "点击第1选项");
transaction = fm.beginTransaction();
afra1=new afra1(fm,datas);
transaction.replace(R.id.fl_content,afra1);
//transaction.add(R.id.fl_content,afra1);
bindViews();
transaction.commit();
}
});
fra2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i(TAG, "点击第二选项");
transaction = fm.beginTransaction();
afra2=new afra2();
transaction.replace(R.id.fl_content,afra2);
bindViews();
transaction.commit();
}
});
fra3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i(TAG, "点击第3选项");
transaction = fm.beginTransaction();
afra3=new afra3();
transaction.replace(R.id.fl_content,afra3);
bindViews();
transaction.commit();
}
});
}
private void bindViews() {
txt_title = (TextView) findViewById(R.id.txt_title);
fl_content = (FrameLayout) findViewById(R.id.fl_content);
}
private void setDefaultFragment()
{
transaction = fm.beginTransaction();
afra2=new afra2();
transaction.replace(R.id.fl_content,afra2);
bindViews();
transaction.commit();
}
private void initUI() {
showBtn = (Button) findViewById(R.id.btn_show);
// showImg = (ImageView) findViewById(R.id.img_show);
showBtn.setOnClickListener(this);
//SignDemo=new SignDemo();
}
private void openSystemFile() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);//打开多个文件
intent.addCategory(Intent.CATEGORY_DEFAULT);
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
try {
startActivityForResult(Intent.createChooser(intent, "请选择文件"), 1);
} catch (ActivityNotFoundException e) {
e.printStackTrace();
Toast.makeText(this, "请 安装文件管理器", Toast.LENGTH_SHORT);
}
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 && resultCode == Activity.RESULT_OK) {
//Get the Uri of the selected file
if(data.getClipData() != null) {//有选择多个文件
int count = data.getClipData().getItemCount();
Log.i(TAG,"url count ： "+ count);
int currentItem = 0;
while(currentItem < count) {
Uri imageUri = data.getClipData().getItemAt(currentItem).getUri();
String imgpath = ContentUriUtil.getPath(this,imageUri);
Log.i(TAG,"url "+ imgpath);
//do something with the image (save it to some directory or whatever you need to do with it here)
currentItem = currentItem + 1;
}
} else if(data.getData() != null) {//只有一个文件咯
String imagePath = ContentUriUtil.getPath(this,data.getData());
Log.i(TAG,"Single image path ---- "+ imagePath);
//do something with the image (save it to some directory or whatever you need to do with it here)
}
}
}
public void onClick(View v) {
// openSystemFile();
//拍照界面
Intent intent = new Intent(this, Activity_add.class);
startActivity(intent);
//抠图界面
// Intent intent = new Intent(this, StillCutPhotoActivity.class);
// startActivity(intent);
// switch (v.getId()) {
// case R.id.btn_show:
// if (curPos > 9) {
// curPos = 0;
// }
// loader.load(showImg, urls.get(curPos));
// curPos++;
// break;
// }
}
}
第一个fragment:
```java
package com.example.hello2;
import android.annotation.SuppressLint;
import androidx.fragment.app.Fragment;
//import android.app.FragmentManager;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.TextView;
import org.xutils.view.annotation.Event;
import java.util.ArrayList;
/**
* Created by Jay on 2015/9/6 0006.
*/
public class afra1 extends Fragment {
private FragmentManager fManager;
private ArrayList<afra1_Data> datas;
private ListView list_news;
public afra1(FragmentManager fManager, ArrayList<afra1_Data> datas) {
this.fManager = fManager;
this.datas = datas;
}
@Override
@Event(value=R.id.list_news,type= OnItemClickListener.class)
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.afra1, container, false);
list_news = (ListView) view.findViewById(R.id.list_news);
afra1_MyAdapter myAdapter = new afra1_MyAdapter(datas, getActivity());
list_news.setAdapter(myAdapter);
//list_news.setOnItemClickListener(this);
list_news.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.i("点击事件", String.valueOf(position)+" [id]"+String.valueOf(id));
}
});
return view;
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/primary_background"
android:fitsSystemWindows="true"
android:keepScreenOn="true"
android:orientation="vertical">
<Button
android:id="@+id/btn_show"
android:layout_width="match_parent"
android:layout_height="64dp"
android:text="按钮"
android:clickable="true"
/>
<TextView
android:id="@+id/txt_title"
android:layout_width="match_parent"
android:layout_height="56dp"
android:background="@color/black"
android:textColor="@color/white"
android:text="新闻列表"
android:textSize="20sp"
android:textStyle="bold"
android:gravity="center"/>
<FrameLayout
android:id="@+id/fl_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@id/txt_title">
</FrameLayout>
<LinearLayout
android:id="@+id/linear_views"
android:layout_width="match_parent"
android:layout_height="90dp"
android:paddingBottom="10dp"
android:layout_alignParentBottom="true"
android:background="@color/white"
android:orientation="horizontal">
<RelativeLayout
android:id="@+id/fra1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:clickable="false">
<RelativeLayout
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:orientation="vertical">
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerHorizontal="true"
android:src="@mipmap/album_black"></ImageView>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"
android:gravity="center"
android:text="@string/select_picture"
android:textColor="@color/secondary_text_color"
android:textSize="@dimen/text_size_11sp"></TextView>
</RelativeLayout>
<View
android:layout_width="0.1dp"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:background="@color/primary_text_color"></View>
<RelativeLayout
android:id="@+id/fra2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:clickable="false">
<RelativeLayout
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:background="@android:color/white"
android:orientation="vertical">
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerHorizontal="true"
android:src="@drawable/icon_cut"></ImageView>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp"
android:gravity="center"
android:text="@string/cut"
android:textColor="@color/secondary_text_color"
android:textSize="@dimen/text_size_11sp"></TextView>
</RelativeLayout>
<View
android:layout_width="0.1dp"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:background="@color/primary_text_color"></View>
<RelativeLayout
android:id="@+id/fra3"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:clickable="false">
<RelativeLayout
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="22dp"
android:layout_centerHorizontal="true"
android:background="@android:color/white"
android:orientation="vertical">
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerHorizontal="true"
android:src="@drawable/icons_background"></ImageView>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:gravity="center"
android:text="@string/replace_background"
android:textColor="@color/secondary_text_color"
android:textSize="@dimen/text_size_11sp"></TextView>
</RelativeLayout>
<View
android:layout_width="0.1dp"
android:layout_height="match_parent"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"
android:background="@color/primary_text_color"></View>
<RelativeLayout
android:id="@+id/fra4"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center">
<RelativeLayout
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_marginTop="22dp"
android:layout_centerHorizontal="true"
android:background="@android:color/white"
android:orientation="vertical">
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerHorizontal="true"
android:src="@drawable/icons_save"></ImageView>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_alignParentBottom="true"
android:layout_marginBottom="10dp"
android:gravity="center"
android:text="@string/save"
android:textColor="@color/secondary_text_color"
android:textSize="@dimen/text_size_11sp"></TextView>
</RelativeLayout>
</LinearLayout>
</RelativeLayout>
afra1.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/afra1"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="afra1">
<ListView
android:id="@+id/list_news"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
afra1_list_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ImageView
android:id="@+id/pitem"
android:layout_width="380dp"
android:layout_height="213dp"
/>
</LinearLayout>
afra1_MyAdpter.java
```java
package com.example.hello2 ;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import com.huawei.hms.framework.common.Utils;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.*;
/**
* Created by Jay on 2015/9/6 0006.
*/
public class afra1_MyAdapter extends BaseAdapter{
private List<afra1_Data> mData;
private Context mContext;
FileCache fileCache;
public afra1_MyAdapter(List<afra1_Data> mData, Context mContext) {
this.mData = mData;
this.mContext = mContext;
}
@Override
public int getCount() {
return mData.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder;
if(convertView == null){
convertView = LayoutInflater.from(mContext).inflate(R.layout.afra1_list_item,parent,false);
viewHolder = new ViewHolder();
viewHolder.pic_item_title = (ImageView) convertView.findViewById(R.id.pitem);
convertView.setTag(viewHolder);
}else{
viewHolder = (ViewHolder) convertView.getTag();
}
ImageLoader img=new ImageLoader();
viewHolder.pic_item_title.setImageBitmap(img.getBitmapFromURL(mData.get(position).getNew_title()));
Log.i("信息：getView"+String.valueOf(position), mData.get(position).getNew_title());
return convertView;
}
private class ViewHolder{
ImageView pic_item_title;
}
}
