/
BrowseFile.java
96 lines (83 loc) · 3.34 KB
/
BrowseFile.java
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package edu.nctu.wirelab.testsignalv1;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
public class BrowseFile extends AppCompatActivity {
private static final String TagName = "BrowseFile";
private ListView listView;
private String FilePath;
private File[] filelist;
private final int FileShiftUnit = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_browse_file);
listView = (ListView) findViewById(R.id.listView);
FilePath = "/";
ChangeDirectory();
//ListView onClick
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
//Log.d(TagName, "position:"+position+" name:"+filelist[position]);
if( filelist[position].isDirectory() ){
FilePath = filelist[position].getAbsolutePath();
Log.d(TagName, "FilePath:"+FilePath);
ChangeDirectory();
}
else{
ImportKey.KeyPath = filelist[position].getAbsolutePath();
onBackPressed();
}
} //end onItemClick
}); //end setOnItemClickListener
}
private void ChangeDirectory(){
File dir = new File(FilePath);
filelist = dir.listFiles();
ArrayAdapter<String> adapter;
if( dir.canRead()==false ){
String[] theNamesOfFiles = new String[0];
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, theNamesOfFiles);
}
else {
String[] theNamesOfFiles = new String[filelist.length];
//add ".." for back to upper layer
//theNamesOfFiles[0] = "..";
for (int i = 0; i < theNamesOfFiles.length; i++) {
theNamesOfFiles[i] = filelist[i].getName();
if (filelist[i].isDirectory())
theNamesOfFiles[i] = theNamesOfFiles[i] + "/";
}
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, theNamesOfFiles);
}
listView.setAdapter(adapter);
}
public static String getStringFromFile (String filePath) throws Exception {
File fl = new File(filePath);
FileInputStream fin = new FileInputStream(fl);
String ret = convertStreamToString(fin);
//Make sure you close all streams.
fin.close();
return ret;
}
public static String convertStreamToString(InputStream is) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line).append("\n");
}
reader.close();
return sb.toString();
}
}