仿手机文件夹管理器，可以打开显示SD卡下是文件，可以进入下一级和返回上一级。
效果图：
关键代码入下：
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.stcyclub.zhimeng.R;
import com.stcyclub.zhimeng.R.drawable;
import com.stcyclub.zhimeng.R.id;
import com.stcyclub.zhimeng.R.layout;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class LocationFileLiabraryActivity extends Activity {
private TextView tvpath;
private ListView lvFiles;
private Button btnParent;
// 记录当前的父文件夹
File currentParent;
// 记录当前路径下的所有文件夹的文件数组
File[] currentFiles;
String SDCardPath;
String folderPath;
public 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
}
return sdDir.toString();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_sdcard_image);
// Bundle bundle = new Bundle();
// bundle = this.getIntent().getExtras();
// if (bundle != null) {
// imageORresfile = bundle.getBoolean("imageORresfile");
// }
lvFiles = (ListView) this.findViewById(R.id.listView);
tvpath = (TextView) this.findViewById(R.id.tvpath);
btnParent = (Button) this.findViewById(R.id.btnParent);
SDCardPath = getSDPath();
folderPath = SDCardPath + "/";
// 获取系统的SDCard的目录
File root = new File(SDCardPath);
// 如果SD卡存在的话imageORresfile ture 获取图片 false获取文件
if (root.exists()) {
// if (imageORresfile) {
// currentParent = root;
// currentFiles = root.listFiles();
//
// } else {
currentParent = new File(folderPath);
currentFiles = currentParent.listFiles();
// }
// 使用当前目录下的全部文件、文件夹来填充ListView
inflateListView(currentFiles);
}
lvFiles.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view,
int position, long id) {
// 如果用户单击了文件，直接返回，不做任何处理
if (currentFiles[position].isFile()) {
// 也可自定义扩展打开这个文件等
String name = currentFiles[position].getName();
//Log.d("TAG", "file...name.0...."+name);
int index=name.lastIndexOf(".");
//Log.d("TAG", "index...name.0...."+index);
if(index>0){
String suffix=name.substring(index+1, name.length());
Log.d("TAG", "suffix.0...."+suffix);
if (!(suffix.equals("exe")||suffix.equals("bat"))) {
String imagePath = new String();
try {
imagePath = currentParent.getCanonicalPath() + "/"
+ name;
} catch (IOException e) {
e.printStackTrace();
}
Intent intent = new Intent();
// intent.setClass(SDCardImageActivity.this,
// ChatActivity.class);
Bundle bundle = new Bundle();
bundle.putString("filePath", imagePath);
intent.putExtras(bundle);
LocationFileLiabraryActivity.this.setResult(10002, intent);
LocationFileLiabraryActivity.this.finish();
overridePendingTransition(R.anim.in_from_left, R.anim.out_to_rigth);
} else{
Toast.makeText(LocationFileLiabraryActivity.this, "格式不支持",
Toast.LENGTH_LONG).show();
}
}else{
Toast.makeText(LocationFileLiabraryActivity.this, "格式不支持",
Toast.LENGTH_LONG).show();
}
return;
}
// 获取用户点击的文件夹 下的所有文件
File[] tem = currentFiles[position].listFiles();
if (tem == null || tem.length == 0) {
Toast.makeText(LocationFileLiabraryActivity.this,
"当前路径不可访问或者该路径下没有文件", Toast.LENGTH_LONG).show();
} else {
// 获取用户单击的列表项对应的文件夹，设为当前的父文件夹
currentParent = currentFiles[position];
// 保存当前的父文件夹内的全部文件和文件夹
currentFiles = tem;
// 再次更新ListView
inflateListView(currentFiles);
}
}
});
// 获取上一级目录
btnParent.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
if (!currentParent.getCanonicalPath().equals(SDCardPath)) {
// 获取上一级目录
currentParent = currentParent.getParentFile();
// 列出当前目录下的所有文件
currentFiles = currentParent.listFiles();
// 再次更新ListView
inflateListView(currentFiles);
}
} catch (Exception e) {
// TODO: handle exception
}
}
});
}
public void btnClick(View v){
switch (v.getId()) {
case R.id.location_file_btn_back:
LocationFileLiabraryActivity.this.finish();
overridePendingTransition(R.anim.in_from_left, R.anim.out_to_rigth);
break;
default:
break;
}
}
private void inflateListView(File[] files) {
List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>();
for (int i = 0; i < files.length; i++) {
Map<String, Object> listItem = new HashMap<String, Object>();
if (files[i].isDirectory()) {
// 如果是文件夹就显示的图片为文件夹的图片
listItem.put("icon", R.drawable.folder_picture);
} else {
String name=files[i].getName();
int index=name.lastIndexOf(".");
if(index>0){
String suffix=name.substring(index+1, name.length());
if(suffix.equals("jpg") || suffix.equals("bmp")
|| suffix.equals("jpeg") || suffix.equals("png")){
listItem.put("icon", R.drawable.picture);
}else if(suffix.equals("avi")||suffix.equals("mkv")||suffix.equals("mp4") ||suffix.equals("flv") ||suffix.equals("3gp")||suffix.equals("rmvb")){
listItem.put("icon", R.drawable.video_picture);
}else if(suffix.equals("apk")){
listItem.put("icon", R.drawable.apk_picture);
}else if(suffix.equals("xls")||suffix.equals("doc")||suffix.equals("txt")){
listItem.put("icon", R.drawable.word_picture);
}else if(suffix.equals("zip")||suffix.equals("rar")){
listItem.put("icon", R.drawable.zip_picture);
}else if(suffix.equals("mp3")){
listItem.put("icon", R.drawable.music_picture);
}else{
listItem.put("icon", R.drawable.unknow_picture);
}
}else{
listItem.put("icon", R.drawable.unknow_picture);
}
}
// 添加一个文件名称
listItem.put("filename", files[i].getName());
File myFile = new File(files[i].getName());
// 获取文件的最后修改日期
long modTime = myFile.lastModified();
// SimpleDateFormat dateFormat = new SimpleDateFormat(
// "yyyy-MM-dd HH:mm:ss");
//System.out.println(dateFormat.format(new Date(modTime)));
// 添加一个最后修改日期
// listItem.put("modify",
// "修改日期：" + dateFormat.format(new Date(modTime)));
listItems.add(listItem);
}
// 定义一个SimpleAdapter
SimpleAdapter adapter = new SimpleAdapter(LocationFileLiabraryActivity.this,
listItems, R.layout.sdcard_image_list_item, new String[] {
"filename", "icon", "modify" }, new int[] {
R.id.file_name, R.id.icon, R.id.file_modify });
// 填充数据集
lvFiles.setAdapter(adapter);
try {
tvpath.setText("当前路径为:" + currentParent.getCanonicalPath());
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onStart() {
super.onStart();
}
@Override
public void onResume() {
super.onResume();
}
@Override
public void onPause() {
super.onPause();
}
@Override
public void onStop() {
super.onStop();
}
@Override
public void onDestroy() {
super.onDestroy();
}
@Override
public void onRestart() {
super.onRestart();
}
}
xml布局：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/rl_layout"
android:layout_width="fill_parent"
android:layout_height="@dimen/activity_main_tab_title_height"
android:background="@color/black_top"
android:layout_alignParentTop="true"
android:gravity="center_vertical" >
<ImageButton
android:id="@+id/location_file_btn_back"
android:layout_width="@dimen/activity_btn_height_login_and_register"
android:layout_height="fill_parent"
android:layout_centerVertical="true"
android:background="@drawable/btn_click_goback"
android:src="@drawable/goback_left"
android:onClick="btnClick"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="文件选择"
android:layout_centerInParent="true"
android:textSize="@dimen/activity_Textsize20_4.0"
android:textColor="#ffffff" />
<Button
android:id="@+id/btnParent"
android:layout_width="60dp"
android:layout_height="30dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:layout_centerInParent="true"
android:background="@drawable/btn_click1"
android:textColor="@color/login_btn_text_color"
android:text="上一级"/>
</RelativeLayout>
<TextView
android:id="@+id/tvpath"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/black20"
android:textColor="@color/black"
android:textSize="15sp"
android:text="文件路径"
/>
<ListView
android:id="@+id/listView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"></ListView>
</LinearLayout>
时间： 2024-12-22 06:15:40