[英]Android File Manager only allowing me to go one folder deep
我已经创建了将在其他程序中使用的文件管理器,但是我遇到了问题。 它显示了我的android手机上的文件列表,我可以深深地单击一个文件夹,但是如果超过一个,它将停止工作。 我主要是因为“ if(K.getAbsoluteFile()。isDirectory()== true)”,如果我摆脱了这一行,尽管它只是崩溃了。 因此,这似乎只允许我深入一个文件夹,有人可以找出我在这里做错了什么吗?
同样,任何指导或您对这个主题有什么了解,我都会发现它是对随机代码的一种混乱。
package book.BouncySquare;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class FileManager extends ListActivity {
public File clickedFile = null;
private List<String> directoryEntries = new ArrayList<String>();
//private List<String> directoryEntries = new ArrayList<String>();
private File currentDirectory = new File("/");
@Override
public void onCreate(Bundle icicle) {
Log.d("startx", "start");
super.onCreate(icicle);
browseToRoot();
}
public void browseToRoot() {
Log.d("Browse", "browse"+currentDirectory.getAbsoluteFile());
browseTo(new File("/"));
}
private void browseTo(File file) {
Log.d("mew", "too");
if(file.isDirectory()){
Log.d("check", "it");
fill(file); }
}
private void browse(String x) {
Log.d("created", "newfile");
final File K=new File(x);
Log.d("broke", "ass");
if(K.getAbsoluteFile().isDirectory()==true){
Log.d("Z"+K.getAbsoluteFile(), "directory");
fill(K.getAbsoluteFile());}
else{
Log.d("X"+K.getName(), "NotADirectoryOrHidden");
Log.d("A"+K.getAbsoluteFile(), "directory");
}
}
private void fill(File files) {
File[] meow=null;
this.directoryEntries.clear();
meow= files.listFiles();
Log.d("sss", "sss");
this.directoryEntries.add(getString(R.string.current_dir));// directoryentries is an arraylist that holds our Directories names
this.directoryEntries.add(getString(R.string.up_one_level));
for (File file : meow) {
this.directoryEntries.add(file.getName()); //fill our string array directoryentries with each files getName, then we pass it to arrayAdapter to populate
}
ArrayAdapter<String> directoryList = new ArrayAdapter<String>(this,R.layout.file_row, this.directoryEntries); //our context,layout, and array of directories is created
this.setListAdapter(directoryList);
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
String clickedEntry =this.directoryEntries.get((int) id);
Log.d("clickedID="+id, "clickedPosition="+clickedEntry);
browse(clickedEntry);
}
}
尝试在当前目录之前添加要列出的目录。
private void browse(String x) {
Log.d("created", "newfile");
final File K=new File(currentDirectory, x);
Log.d("broke", "ass");
if(K.getAbsoluteFile().isDirectory()==true){
Log.d("Z"+K.getAbsoluteFile(), "directory");
currentDirectory = K.getAbsoluteFile();
fill(K.getAbsoluteFile());}
else{
Log.d("X"+K.getName(), "NotADirectoryOrHidden");
Log.d("A"+K.getAbsoluteFile(), "directory");
}
}
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