Android(安卓)目录选择器

chooserdialog.xml

[html] view plain copy

<?xmlversion="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<LinearLayout
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="40dip">
<Button
android:layout_width="40dip"
android:layout_height="40dip"
android:text="HOME"
android:id="@+id/btn_home"
android:layout_gravity="left"
android:layout_weight="1"
/>
<LinearLayoutandroid:layout_width="140dip"
android:layout_height="35dip"
android:id="@+id/dir_layout"
android:gravity="center"
android:layout_weight="1">
</LinearLayout>
<!--<TextView
android:layout_width="140dip"
android:layout_height="35dip"
android:id="@+id/dir_str"
android:gravity="center"
android:layout_weight="1"
/>-->
<Button
android:layout_width="40dip"
android:layout_height="40dip"
android:text="BACK"
android:id="@+id/btn_back"
android:layout_gravity="right"
android:layout_weight="1"
/>
</LinearLayout>
<ListView
android:layout_width="fill_parent"
android:layout_height="300dip"
android:id="@+id/list_dir"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/btn_ok"
android:text="OK"/>
</LinearLayout>

package hkp.dirchooser;

Dirchooserdialog代码 [java] view plain copy

importjava.io.File;
importjava.util.ArrayList;
importjava.util.List;
importandroid.app.Dialog;
importandroid.content.Context;
importandroid.os.Bundle;
importandroid.os.Environment;
importandroid.os.Handler;
importandroid.view.Gravity;
importandroid.view.View;
importandroid.widget.AdapterView;
importandroid.widget.AdapterView.OnItemClickListener;
importandroid.widget.ArrayAdapter;
importandroid.widget.Button;
importandroid.widget.EditText;
importandroid.widget.LinearLayout;
importandroid.widget.ListView;
importandroid.widget.TextView;
importandroid.widget.Toast;
/**
*@authorHKP
*2011-6-17
*
*/
publicclassDirChooserDialogextendsDialogimplementsandroid.view.View.OnClickListener{
privateListViewlist;
ArrayAdapter<String>Adapter;
ArrayList<String>arr=newArrayList<String>();
Contextcontext;
privateStringpath;
privateTextViewtitle;
privateEditTextet;
privateButtonhome,back,ok;
privateLinearLayouttitleView;
privateinttype=1;
privateString[]fileType=null;
publicfinalstaticintTypeOpen=1;
publicfinalstaticintTypeSave=2;
/**
*@paramcontext
*@paramtype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
*@paramfileType要过滤的文件类型,null表示只选择目录
*@paramresultPath点OK按钮返回的结果，目录或者目录+文件名
*/
publicDirChooserDialog(Contextcontext,inttype,String[]fileType,StringresultPath){
super(context);
//TODOAuto-generatedconstructorstub
this.context=context;
this.type=type;
this.fileType=fileType;
this.path=resultPath;
}
/*(non-Javadoc)
*@seeandroid.app.Dialog#dismiss()
*/
@Override
publicvoiddismiss(){
//TODOAuto-generatedmethodstub
super.dismiss();
}
/*(non-Javadoc)
*@seeandroid.app.Dialog#onCreate(android.os.Bundle)
*/
@Override
protectedvoidonCreate(BundlesavedInstanceState){
//TODOAuto-generatedmethodstub
super.onCreate(savedInstanceState);
setContentView(R.layout.chooserdialog);
path=getRootDir();
arr=(ArrayList<String>)getDirs(path);
Adapter=newArrayAdapter<String>(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=newTextView(context);
titleView.addView(title);
title.setText(path);
}elseif(type==TypeSave){
et=newEditText(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
Runnableadd=newRunnable(){
@Override
publicvoidrun(){
//TODOAuto-generatedmethodstub
arr.clear();
//System.out.println("Runnablepath:"+path);
//必须得用这种方法为arr赋值才能更新
List<String>temp=getDirs(path);
for(inti=0;i<temp.size();i++)
arr.add(temp.get(i));
Adapter.notifyDataSetChanged();
}
};
privateOnItemClickListenerlvLis=newOnItemClickListener(){
@Override
publicvoidonItemClick(AdapterView<?>arg0,Viewarg1,intarg2,
longarg3){
Stringtemp=(String)arg0.getItemAtPosition(arg2);
//System.out.println("OnItemClickpath1:"+path);
if(temp.equals(".."))
path=getSubDir(path);
elseif(path.equals("/"))
path=path+temp;
else
path=path+"/"+temp;
//System.out.println("OnItemClickpath2"+path);
if(type==TypeOpen)
title.setText(path);
Handlerhandler=newHandler();
handler.post(add);
}
};
privateList<String>getDirs(Stringipath){
List<String>file=newArrayList<String>();
//System.out.println("GetDirspath:"+ipath);
File[]myFile=newFile(ipath).listFiles();
if(myFile==null){
file.add("..");
}else
for(Filef:myFile){
//过滤目录
if(f.isDirectory()){
Stringtempf=f.toString();
intpos=tempf.lastIndexOf("/");
StringsubTemp=tempf.substring(pos+1,tempf.length());
//StringsubTemp=tempf.substring(path.length(),tempf.length());
file.add(subTemp);
//System.out.println("filesindir:"+subTemp);
}
//过滤知道类型的文件
if(f.isFile()&&fileType!=null){
for(inti=0;i<fileType.length;i++){
inttypeStrLen=fileType[i].length();
StringfileName=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)+"Filesize:"+file.size());
returnfile;
}
/*(non-Javadoc)
*@seeandroid.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
publicvoidonClick(Viewv){
//TODOAuto-generatedmethodstub
if(v.getId()==home.getId()){
path=getRootDir();
if(type==TypeOpen)
title.setText(path);
Handlerhandler=newHandler();
handler.post(add);
}elseif(v.getId()==back.getId()){
path=getSubDir(path);
if(type==TypeOpen)
title.setText(path);
Handlerhandler=newHandler();
handler.post(add);
}elseif(v.getId()==ok.getId()){
dismiss();
if(type==TypeSave)
path=path+"/"+et.getEditableText().toString()+".wf";
Toast.makeText(context,path,Toast.LENGTH_SHORT).show();
}
}
privateStringgetSDPath(){
FilesdDir=null;
booleansdCardExist=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,"NoSDCardinside!",Toast.LENGTH_SHORT).show();
returnnull;
}
returnsdDir.toString();
}
privateStringgetRootDir(){
Stringroot="/";
path=getSDPath();
if(path==null)
path="/";
returnroot;
}
privateStringgetSubDir(Stringpath){
Stringsubpath=null;
intpos=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;
returnsubpath;
}
}

package hkp.dirchooser;

Mainactivity代码 [java] view plain copy

importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.view.View;
importandroid.view.View.OnClickListener;
importandroid.widget.Button;
publicclassMainActivityextendsActivity{
/**Calledwhentheactivityisfirstcreated.*/
@Override
publicvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Buttonbtn=(Button)findViewById(R.id.btn_open);
btn.setOnClickListener(newOnClickListener(){
@Override
publicvoidonClick(Viewv){
//TODOAuto-generatedmethodstub
Stringpath=null;
String[]fileType={"dst"};//要过滤的文件类型列表
DirChooserDialogdlg=newDirChooserDialog(MainActivity.this,2,fileType,path);
dlg.setTitle("Choosedstfiledir");
dlg.show();
}
});
}
}

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