1.将loadRoot和loadDirectory两个方法合并为loadDirectory(),本质上都是加载一个目录

2.发现不管怎么加载都是根目录的内容,随后发现是之前的一个错误想法:在当前的fragment刷新布局,然后原来的布局压栈,虽然找到了navigation的方法,但是为了节约资源将FileAdapter设置为单例模式没有改回来.

CloudKey/app/src/main/java/com/thankvinci/CloudKey/Files/FileAdapter.java

@@ -1,9 +1,6 @@
 package com.thankvinci.CloudKey.Files;
 
-import android.app.Activity;
 import android.os.Bundle;
-import android.os.Handler;
-import android.os.Message;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -12,14 +9,12 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentTransaction;
 import androidx.navigation.Navigation;
 import androidx.recyclerview.widget.RecyclerView;
 
 import com.thankvinci.CloudKey.Fragment.FileManageFragment;
 import com.thankvinci.CloudKey.R;
 
-import java.io.File;
 import java.util.List;
 
 public class FileAdapter extends RecyclerView.Adapter<FileAdapter.ViewHolder> {
@@ -40,16 +35,6 @@ public class FileAdapter extends RecyclerView.Adapter<FileAdapter.ViewHolder> {
           name = file.findViewById(R.id.file_name);
         }
     }
-    public static FileAdapter getInstance(List<FileItem> fileList,Fragment fragment){
-        if(adapter != null){
-            return adapter;
-        }
-        adapter = new FileAdapter(fileList,fragment);
-        return adapter;
-    }
-    public void setFileList(List<FileItem> fileList){
-        this.fileList = fileList;
-    }
     public FileAdapter(List<FileItem> fileList,Fragment fragment){
         this.fileList = fileList;
         this.fragment = fragment;
@@ -65,14 +50,16 @@ public class FileAdapter extends RecyclerView.Adapter<FileAdapter.ViewHolder> {
             public void onClick(View v){
                 int position = holder.getAdapterPosition();
                 FileItem fitem = fileList.get(position);
-                Toast.makeText(v.getContext(),fitem.getName(),Toast.LENGTH_SHORT).show();
+                //Toast.makeText(v.getContext(),fitem.getName(),Toast.LENGTH_SHORT).show();
                 if(fitem.isDir()){
                     StringBuilder builder = new StringBuilder();
                     builder.append(((FileManageFragment)fragment).getDir());
+
                     builder.append("/");
                     builder.append(fitem.getName());
                     data.putString("dir",builder.toString());
                     data.putBoolean("isRoot",false);
+                    Toast.makeText(v.getContext(),data.getString("dir"),Toast.LENGTH_SHORT).show();
                     Navigation.findNavController(v).navigate(R.id.action_openDir,data);
                 }else{
                     Toast.makeText(v.getContext(),"没有打开除文件夹和压缩包以外的功能",Toast.LENGTH_SHORT).show();

CloudKey/app/src/main/java/com/thankvinci/CloudKey/Files/FileItem.java

@@ -32,4 +32,7 @@ public class FileItem {
     public boolean isDir(){
         return !type;
     }
+    public boolean isZip(){
+        return isZip;
+    }
 }

CloudKey/app/src/main/java/com/thankvinci/CloudKey/Fragment/FileManageFragment.java

@@ -33,7 +33,6 @@ public class FileManageFragment extends Fragment {
     private EditText path_edit;
     private RecyclerView directoryView;
     private List<FileItem> fileItemList;
-    private String fileNames[];
     private File files[];
 
     public FileManageFragment(){
@@ -47,52 +46,26 @@ public class FileManageFragment extends Fragment {
         directoryView = (RecyclerView)getView().findViewById(R.id.dir_list);
 
         Bundle data = getArguments();
-        dir = data.getString("dir");
         isRoot = data.getBoolean("isRoot");
-        Toast.makeText(getActivity(),dir+isRoot,Toast.LENGTH_SHORT).show();
+
         if(isRoot){
-            loadRoot();
+            //Toast.makeText(getActivity(),"root",Toast.LENGTH_SHORT).show();
+            dir = Environment.getExternalStorageDirectory().getPath(); //获取根目录
         }else{
-            loadDirectory(dir);
+            dir = data.getString("dir");
+            Toast.makeText(getActivity(),dir,Toast.LENGTH_SHORT).show();
         }
-        initLayout();
+        loadDirectory();
     }
     public String getDir(){
         return dir;
     }
-    private void initLayout(){
-        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.VERTICAL);
-        directoryView.setLayoutManager(layoutManager);
-        FileAdapter adapter = FileAdapter.getInstance(fileItemList,this);
-        adapter.setFileList(fileItemList);
-        directoryView.setAdapter(adapter);
-    }
-    private void loadRoot() {
-        //加载外部存储的根目录
+    public void loadDirectory(){
         ActivityCompat.requestPermissions(getActivity(), new String[]{ //运行时权限
                 "android.permission.WRITE_EXTERNAL_STORAGE",
                 "android.permission.READ_EXTERNAL_STORAGE"}, 1);
-
-        String rootPath = Environment.getExternalStorageDirectory().getPath();
-        dir = rootPath;
         path_edit.setText(dir);
-        File root = new File(rootPath);
-        files = root.listFiles();
-        if (files == null){
-            //当目录里为空时,列表为空对象
-        }else{
-            FileUtils.orderByName(files);
-
-            initDirectory();
-        }
-
-    }
-    public void loadDirectory(String path){
-        ActivityCompat.requestPermissions(getActivity(), new String[]{ //运行时权限
-                "android.permission.WRITE_EXTERNAL_STORAGE",
-                "android.permission.READ_EXTERNAL_STORAGE"}, 1);
-        path_edit.setText(path);
-        File directory = new File(path);
+        File directory = new File(dir);
         files = directory.listFiles();
         if (files == null){
             //当目录里为空时,列表为空对象
@@ -100,7 +73,7 @@ public class FileManageFragment extends Fragment {
             FileUtils.orderByName(files);
             initDirectory();
         }
-        Toast.makeText(getActivity(),directory.canRead()+"",Toast.LENGTH_SHORT).show();
+        initLayout();
     }
     private void initDirectory(){
         fileItemList = null;
@@ -133,4 +106,10 @@ public class FileManageFragment extends Fragment {
             }
         }
     }
+    private void initLayout(){
+        StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(4,StaggeredGridLayoutManager.VERTICAL);
+        directoryView.setLayoutManager(layoutManager);
+        FileAdapter adapter = new FileAdapter(fileItemList,this);
+        directoryView.setAdapter(adapter);
+    }
 }

开发历程.md

@@ -219,5 +219,8 @@ public static final View.OnClickListener createNavigateOnClickListener(@IdRes in
 
 返回一个OnClickListener,但是我是分文件和目录的,这个方法又不能重写,然后又找到了https://blog.csdn.net/m0_46962786/article/details/109119746这篇文章,这里面是在普通的OnClickListener中获取当前的Navigation的controller,然后调用navigate()方法去触发action和传递参数
 
+**2021/6/9**
 
+将loadRoot和loadDirectory两个方法合并为loadDirectory(),本质上都是加载一个目录
 
+发现不管怎么加载都是根目录的内容,随后发现是之前的一个错误想法:在当前的fragment刷新布局,然后原来的布局压栈,虽然找到了navigation的方法,但是为了节约资源将FileAdapter设置为单例模式没有改回来.