Android 文件浏览器 - 黑马程序员技术交流社区

package com.example.huajunfilebrowser;
import android.graphics.drawable.Drawable;
public class IconifiedText implements Comparable<IconifiedText> {
private String text="";
private Drawable icon=null;
private String path;
private boolean selectable=true;
public IconifiedText() {
}
public IconifiedText(String text, Drawable icon,String path) {
super();
this.text = text;
this.icon = icon;
this.path=path;
}
public void setPath(String path) {
this.path = path;
}
public String getPath() {
return path;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Drawable getIcon() {
return icon;
}
public void setIcon(Drawable icon) {
this.icon = icon;
}
public boolean isSelectable() {
return selectable;
}
public void setSelectable(boolean selectable) {
this.selectable = selectable;
}
@Override
public int compareTo(IconifiedText another) {
if(this.text!=null){
return this.text.compareTo(another.getText());
}else {
throw new IllegalArgumentException();
}
}
}

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public class IconifiedTextView extends LinearLayout {
private TextView mTextView=null;
private ImageView mImageView=null;
public IconifiedTextView(Context context, IconifiedText aIconifiedText) {
super(context);
this.setOrientation(HORIZONTAL);
mImageView=new ImageView(context);
mImageView.setImageDrawable(aIconifiedText.getIcon());
mImageView.setPadding(8, 12, 6, 12);
addView(mImageView);
mTextView=new TextView(context);
mTextView.setText(aIconifiedText.getText());
mTextView.setPadding(8, 6, 6, 10);
mTextView.setTextSize(26);
addView(mTextView);
}
public void setTextView(String words) {
mTextView.setText(words);
}
public void setImageView(Drawable bullet) {
mImageView.setImageDrawable(bullet);
}
}

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/**
* 自定义文件列表适配器
* @author 老衲玩IT
*/
public class IconifiedTextListAdapter extends BaseAdapter {
private Context context;
private List<IconifiedText> items=new ArrayList<IconifiedText>();
public IconifiedTextListAdapter(Context context){
this.context=context;
}
public IconifiedTextListAdapter(Context context,List<IconifiedText> lit){
this.context=context;
this.items=lit;
}
public void addItem(IconifiedText it) {
this.items.add(it);
}
public void setListItems(List<IconifiedText> lit) {
this.items=lit;
}
public boolean areAllItemsSelectable() {
return false;
}
public boolean isSelectable(int position) {
return items.get(position).isSelectable();
}
@Override
public int getCount() {
return this.items.size();
}
@Override
public Object getItem(int position) {
return this.items.get(position);
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
IconifiedTextView itv;
if(convertView==null){
itv=new IconifiedTextView(context, this.items.get(position));
}else {
itv=(IconifiedTextView) convertView;
itv.setTextView(this.items.get(position).getText());
itv.setImageView(this.items.get(position).getIcon());
}
return itv;
}
}

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/**
* 程序入口
* @author 老衲玩IT
*
*/
public class MainActivity extends Activity {
//文件列表
ListView listView;
ImageButton imbtnBack;
TextView tvCurrent;
String currentDir="sdcard";
File fileDir;
File childFile;
//List<IconifiedText> listIfts=new ArrayList<IconifiedText>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView=(ListView) findViewById(R.id.listView);
fileDir=new File(currentDir);
imbtnBack=(ImageButton) findViewById(R.id.imbtnback);
tvCurrent=(TextView) findViewById(R.id.dir);
tvCurrent.setText(fileDir.getName());
//返回上级目录的按钮
imbtnBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
toParent();
}
});
listView.setOnItemLongClickListener(new OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
childFile=new File(((IconifiedText)parent.getItemAtPosition(position)).getPath());
rename();
return false;
}
});
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String path=((IconifiedText)parent.getItemAtPosition(position)).getPath();
fileDir=new File(path);
browseTo(fileDir);
}
});
browseTo(fileDir);
}
/**
* 返回上级目录
*/
private void toParent() {
String fileParent=fileDir.getParent();
if (fileParent!=null) {
browseTo(new File(fileParent));
}else {
finish();
}
}
/**
* 打开指定的文件
* @param afile
*/
public void openFile(File afile) {
Intent intent=new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
File file=new File(afile.getAbsolutePath());
String fileName=file.getName();
if(checkEndWithInStringArray(fileName,getResources().getStringArray(R.array.fileEndingImage))){
intent.setDataAndType(Uri.fromFile(file), "image/*");
}else if(checkEndWithInStringArray(fileName,getResources().getStringArray(R.array.fileEndingAudio))){
intent.setDataAndType(Uri.fromFile(file), "audio/*");
}else if(checkEndWithInStringArray(fileName,getResources().getStringArray(R.array.fileEndingVideo))){
intent.setDataAndType(Uri.fromFile(file), "video/*");
}else {
//getMIMEType(file);
intent.setDataAndType(Uri.fromFile(file), "*/*");
}
startActivity(intent);
}
/**
* 访问指定文件目录
* @param file 需要访问的文件目录
*/
private void browseTo(File file) {
if (file.isDirectory()) {
this.fileDir=file;
String fileName=file.getName();
if (fileName==null) {
fileName="";
}
tvCurrent.setText(fileName);
//IconifiedText ift=new IconifiedText();
File[] files=file.listFiles();
Resources res=getResources();
Drawable drawableDir=res.getDrawable(R.drawable.folder);
//Drawable drawableFile=res.getDrawable(android.R.drawable.ic_menu_gallery);
IconifiedTextListAdapter adapter=new IconifiedTextListAdapter(this);
//List<File> fileList=new ArrayList<File>();
//fileList.addAll(files);
for (int i = 0; i < files.length; i++) {
for (int j = 1; j < i-1; j++) {
String si=files[i].getName();
String sj=files[j].getName();
if (si.compareTo(sj)<0) {
File tempFile=files[i];
files[i]=files[j];
files[j]=tempFile;
}
}
}
for (int i = 0; i < files.length; i++) {
if (files[i].isDirectory()) {
if (files[i].getName().startsWith(".")) {
continue;
}
adapter.addItem(new IconifiedText(files[i].getName(), drawableDir,files[i].getPath()));
}
}
for (int i = 0; i < files.length; i++) {
Resources resources=getResources();
if(files[i].isFile()){
IconifiedText ift=new IconifiedText();
if(checkEndWithInStringArray(files[i].getName(),resources.getStringArray(R.array.fileEndingImage))){
ift.setIcon(res.getDrawable(R.drawable.image));
}
else if(checkEndWithInStringArray(files[i].getName(),resources.getStringArray(R.array.fileEndingAudio))){
ift.setIcon(res.getDrawable(R.drawable.audio));
}
else if(checkEndWithInStringArray(files[i].getName(),resources.getStringArray(R.array.fileEndingVideo))){
ift.setIcon(res.getDrawable(R.drawable.vedio));
}
else {
ift.setIcon(res.getDrawable(R.drawable.otherfile));
}
String name=files[i].getName();
if (name.length()>20) {
name=name.substring(0, 20);
}
ift.setText(name);
ift.setPath(files[i].getPath());
adapter.addItem(ift);
}
}
if (listView!=null) {
listView.setAdapter(adapter);
}
}else if (file.isFile()) {
openFile(file);
}
}
public void updateAdapter() {
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode==KeyEvent.KEYCODE_BACK) {
toParent();
}
return true;
}

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