资源介绍
目录选择器源代码
chooserdialog.xml
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Dirchooserdialog代码
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package hkp.dirchooser;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.view.Gravity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
/**
* @author HKP 2011-6-17
*
*/
public class DirChooserDialog extends Dialog implements
android.view.View.OnClickListener {
private ListView list;
ArrayAdapter Adapter;
ArrayList arr = new ArrayList();
Context context;
private String path;
private TextView title;
private EditText et;
private Button home, back, ok;
private LinearLayout titleView;
private int type = 1;
private String[] fileType = null;
public final static int TypeOpen = 1;
public final static int TypeSave = 2;
/**
* @param context
* @param type
* 值为1表示创建打开目录类型的对话框，2为创建保存文件到目录类型的对话框
* @param fileType
* 要过滤的文件类型,null表示只选择目录
* @param resultPath
* 点OK按钮返回的结果，目录或者目录+文件名
*/
public DirChooserDialog(Context context, int type, String[] fileType,
String resultPath) {
super(context);
this.context = context;
this.type = type;
this.fileType = fileType;
this.path = resultPath;
}
/**
* (non-Javadoc)
*
* @see android.app.Dialog#dismiss()
*/
@Override
public void dismiss() {
// TODO Auto-generated method stub
super.dismiss();
}
/**
* (non-Javadoc)
*
* @see android.app.Dialog#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.chooserdialog);
path = getRootDir();
arr = (ArrayList) getDirs(path);
Adapter = new ArrayAdapter(context,
android.R.layout.simple_list_item_1, arr);
list = (ListView) findViewById(R.id.list_dir);
list.setAdapter(Adapter);
list.setOnItemClickListener(lvLis);
home = (Button) findViewById(R.id.btn_home);
home.setOnClickListener(this);
back = (Button) findViewById(R.id.btn_back);
back.setOnClickListener(this);
ok = (Button) findViewById(R.id.btn_ok);
ok.setOnClickListener(this);
titleView = (LinearLayout) findViewById(R.id.dir_layout);
if (type == TypeOpen) {
title = new TextView(context);
titleView.addView(title);
title.setText(path);
} else if (type == TypeSave) {
et = new EditText(context);
et.setWidth(240);
et.setHeight(70);
et.setGravity(Gravity.CENTER);
et.setPadding(0, 2, 0, 0);
titleView.addView(et);
et.setText("wfFileName");
}
// title = (TextView) findViewById(R.id.dir_str);
// title.setText(path);
}
// 动态更新ListView
Runnable add = new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
arr.clear();
// System.out.println("Runnable path:"+path);
// 必须得用这种方法为arr赋值才能更新
List temp = getDirs(path);
for (int i = 0; i < temp.size(); i++)
arr.add(temp.get(i));
Adapter.notifyDataSetChanged();
}
};
private OnItemClickListener lvLis = new OnItemClickListener() {
@Override
public void onItemClick(AdapterView arg0, View arg1, int arg2,
long arg3) {
String temp = (String) arg0.getItemAtPosition(arg2);
// System.out.println("OnItemClick path1:"+path);
if (temp.equals(".."))
path = getSubDir(path);
else if (path.equals("/"))
path = path + temp;
else
path = path + "/" + temp;
// System.out.println("OnItemClick path2"+path);
if (type == TypeOpen)
title.setText(path);
Handler handler = new Handler();
handler.post(add);
}
};
private List getDirs(String ipath) {
List file = new ArrayList();
// System.out.println("GetDirs path:"+ipath);
File[] myFile = new File(ipath).listFiles();
if (myFile == null) {
file.add("..");
} else
for (File f : myFile) {
// 过滤目录
if (f.isDirectory()) {
String tempf = f.toString();
int pos = tempf.lastIndexOf("/");
String subTemp = tempf.substring(pos + 1, tempf.length());
// String subTemp =
// tempf.substring(path.length(),tempf.length());
file.add(subTemp);
// System.out.println("files in dir:"+subTemp);
}
// 过滤知道类型的文件
if (f.isFile() && fileType != null) {
for (int i = 0; i < fileType.length; i++) {
int typeStrLen = fileType[i].length();
String fileName = f.getPath().substring(
f.getPath().length() - typeStrLen);
if (fileName.toLowerCase().equals(fileType[i])) {
file.add(f.toString().substring(path.length() + 1,
f.toString().length()));
}
}
}
}
if (file.size() == 0)
file.add("..");
// System.out.println("file[0]:"+file.get(0)+" File size:"+file.size());
return file;
}
/**
* (non-Javadoc)
*
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (v.getId() == home.getId()) {
path = getRootDir();
if (type == TypeOpen)
title.setText(path);
Handler handler = new Handler();
handler.post(add);
} else if (v.getId() == back.getId()) {
path = getSubDir(path);
if (type == TypeOpen)
title.setText(path);
Handler handler = new Handler();
handler.post(add);
} else if (v.getId() == ok.getId()) {
dismiss();
if (type == TypeSave)
path = path + "/" + et.getEditableText().toString() + ".wf";
Toast.makeText(context, path, Toast.LENGTH_SHORT).show();
}
}
private String getSDPath() {
File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState().equals(
android.os.Environment.MEDIA_MOUNTED); // 判断sd卡是否存在
if (sdCardExist) {
sdDir = Environment.getExternalStorageDirectory();// 获取根目录
}
if (sdDir == null) {
// Toast.makeText(context,
// "No SDCard inside!",Toast.LENGTH_SHORT).show();
return null;
}
return sdDir.toString();
}
private String getRootDir() {
String root = "/";
path = getSDPath();
if (path == null)
path = "/";
return root;
}
private String getSubDir(String path) {
String subpath = null;
int pos = path.lastIndexOf("/");
if (pos == path.length()) {
path = path.substring(0, path.length() - 1);
pos = path.lastIndexOf("/");
}
subpath = path.substring(0, pos);
if (pos == 0)
subpath = path;
return subpath;
}
}
Mainactivity代码
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package hkp.dirchooser;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button btn = (Button) findViewById(R.id.btn_open);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String path = null;
String[] fileType = { "dst" };// 要过滤的文件类型列表
DirChooserDialog dlg = new DirChooserDialog(MainActivity.this,
2, fileType, path);
dlg.setTitle("Choose dst file dir");
dlg.show();
}
});
}
}