我有代码在带有复选框的列表视图中显示 SD 卡的文件。它可能会加载完整的文件，而不仅仅是它们的路径！我希望用户选择两个文件，然后获取输入流的文件路径以将它们合并到第三个文件。
代码是 MainActivity.java
package com.example.joiner;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.SequenceInputStream;
import java.util.ArrayList;
import java.util.List;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity {
private Button mButton;
private List<Model> list;
private ListView mainListView ;
public String msg="kumkum";
File[] sdDirectories;
ArrayList<String> planetList;
private List<File> h;
ArrayAdapter<Model> adapter ;
/** Called when the activity is first created. */
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mButton = (Button)findViewById(R.id.Button);
//mButton.setOnClickListener(this);
mainListView = (ListView) findViewById( R.id.mainListView );
mButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
int temp;
//Model[] a=(Model[]) list.toArray();
for(int i=0;i<list.size();i++)
{
Model b=list.get(i);
if(b.isSelected())
{
//Toast.makeText(MainActivity.this, b.getName(), Toast.LENGTH_LONG).show();
for(int counter=0;counter<sdDirectories.length;counter++)
{
if(b.getName().equals(sdDirectories[counter].getName()))
{
Toast.makeText(MainActivity.this,sdDirectories[counter].getPath(), Toast.LENGTH_LONG).show();
h.add(sdDirectories[counter]);
//h.get(0).getPath();
}
}
}
}
}
});
String extState = Environment.getExternalStorageState();
//you may also want to add (...|| Environment.MEDIA_MOUNTED_READ_ONLY)
//if you are only interested in reading the filesystem
if(!extState.equals(Environment.MEDIA_MOUNTED)) {
Toast.makeText(MainActivity.this, "no sd card found", Toast.LENGTH_LONG).show();
}
else{
planetList = new ArrayList<String>();
planetList.add("wajeeh");
//for(int i=0;i<sdDirectories.length;i++)
//planetList.add(sdDirectories[i].getName());
planetList.add(msg);
adapter = new Inadopter(MainActivity.this,getModel());
// Set the ArrayAdapter as the ListView's adapter.
mainListView.setAdapter( adapter );
}
}
private List<Model> getModel() {
list = new ArrayList<Model>();
list.add(get("Linux"));
list.add(get("a"));
// Initially select one of the items
File sd = Environment.getExternalStorageDirectory();
FileFilter MP3ANDdirectoryOnly = new FileFilter() {
private String getExtension(File f) {
String ext = null;
String s = f.getName();
int i = s.lastIndexOf('.');
if (i > 0 && i < s.length() - 1) {
ext = s.substring(i+1).toLowerCase();
}
return ext;
}
public boolean accept(File file) {
if(file.isDirectory()||!file.isHidden())
return true;
String extension = getExtension(file);
if (extension != null||!file.isHidden()) {
if (extension.equals("mp3"))
{
return true;
}
}
return false;
}};
sdDirectories = sd.listFiles(MP3ANDdirectoryOnly);
for(int i=0;i<sdDirectories.length;i++)
list.add(get(sdDirectories[i].getName()));
list.get(1).setSelected(true);
return list;
}
private Model get(String s) {
// TODO Auto-generated method stub
return new Model(s);
}
}
`
InAdapter.java
package com.example.joiner;
import java.util.List;
import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;
public class Inadopter extends ArrayAdapter<Model> {
private final List<Model> list;
private final Activity context;
public Inadopter(Activity context, List<Model> list) {
super(context, R.layout.simpleroow, list);
this.context = context;
this.list = list;
}
static class ViewHolder {
protected TextView text;
protected CheckBox checkbox;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
if (convertView == null) {
LayoutInflater inflator = context.getLayoutInflater();
view = inflator.inflate(R.layout.simpleroow, null);
final ViewHolder viewHolder = new ViewHolder();
viewHolder.text = (TextView) view.findViewById(R.id.label);
viewHolder.checkbox = (CheckBox) view.findViewById(R.id.check);
viewHolder.checkbox
.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
Model element = (Model) viewHolder.checkbox
.getTag();
element.setSelected(buttonView.isChecked());
}
});
view.setTag(viewHolder);
viewHolder.checkbox.setTag(list.get(position));
} else {
view = convertView;
((ViewHolder) view.getTag()).checkbox.setTag(list.get(position));
}
ViewHolder holder = (ViewHolder) view.getTag();
holder.text.setText(list.get(position).getName());
holder.checkbox.setChecked(list.get(position).isSelected());
return view;
}
}
我需要获取两个文件的路径并将其发送到此代码
public class ConcateSongActivity extends Activity {
Button mbutt;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mbutt = (Button)findViewById(R.id.button_Click_Karo);
mbutt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
try {
FileInputStream fis1 = new FileInputStream("/sdcard/viv0.wav");
FileInputStream fis2 = new FileInputStream("/sdcard/viv1.wav");
SequenceInputStream sis = new SequenceInputStream(fis1,fis2);
FileOutputStream fos = new FileOutputStream(new File("/sdcard/vis.wav"));
int temp;
try {
while ((temp = sis.read())!= -1){
fos.write(temp);
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
}