安卓调用系统自带及自制文件浏览器 Android中调用系统的文件浏览器及自制简单的文件浏览器
剑萧舞蝶 人气:0想了解Android中调用系统的文件浏览器及自制简单的文件浏览器的相关内容吗，剑萧舞蝶在本文为您仔细讲解安卓调用系统自带及自制文件浏览器的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：Android,文件浏览器,文件，下面大家一起来学习吧。
调用系统自带的文件浏览器
这很简单：
/** 调用文件选择软件来选择文件 **/
private void showFileChooser() {
intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("*/*");
intent.addCategory(Intent.CATEGORY_OPENABLE);
try {
startActivityForResult(Intent.createChooser(intent, "请选择一个要上传的文件"),
FILE_SELECT_CODE);
} catch (android.content.ActivityNotFoundException ex) {
// Potentially direct the user to the Market with a Dialog
Toast.makeText(getActivity(), "请安装文件管理器", Toast.LENGTH_SHORT)
.show();
}
}
在catch，我们可以做更多的操作，比如会跳转到一个下载文件管理器的页面或者等等。
对于返回的数据怎么处理呢。我项目中的上传是如下接收：
/** 根据返回选择的文件，来进行上传操作 **/
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
if (resultCode == Activity.RESULT_OK) {
// Get the Uri of the selected file
Uri uri = data.getData();
String url;
try {
url = FFileUtils.getPath(getActivity(), uri);
Log.i("ht", "url" + url);
String fileName = url.substring(url.lastIndexOf("/") + 1);
intent = new Intent(getActivity(), UploadServices.class);
intent.putExtra("fileName", fileName);
intent.putExtra("url", url);
intent.putExtra("type ", "");
intent.putExtra("fuid", "");
intent.putExtra("type", "");
getActivity().startService(intent);
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
自制文件浏览器：
这里只加一些简单的图形：
来看代码：
<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="wrap_content"
android:orientation="vertical"
android:layout_gravity="center_horizontal"
tools:context=".MainActivity" >
<TextView
android:id="@+id/txt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<ImageButton
android:id="@+id/imageBt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/home"/>
<ListView
android:id="@+id/listFile"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageView
android:id="@+id/images"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/txtview"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
package com.android.xiong.sdfilelook;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
public class MainActivity extends Activity {
private ListView listfile;
//当前文件目录
private String currentpath;
private TextView txt1;
private ImageView images;
private TextView textview;
private ImageButton imagebt1;
private int[] img = { R.drawable.file, R.drawable.folder, R.drawable.home };
private File[] files;
private SimpleAdapter simple;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listfile = (ListView) findViewById(R.id.listFile);
txt1 = (TextView) findViewById(R.id.txt1);
imagebt1 = (ImageButton) findViewById(R.id.imageBt1);
init(Environment.getExternalStorageDirectory());
listfile.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
// 获取单击的文件或文件夹的名称
String folder = ((TextView) arg1.findViewById(R.id.txtview))
.getText().toString();
try {
File filef = new File(currentpath + '/'
+ folder);
init(filef);
} catch (Exception e) {
e.printStackTrace();
}
}
});
//回根目录
imagebt1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
init(Environment.getExternalStorageDirectory());
}
});
}
// 界面初始化
public void init(File f) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
// 获取SDcard目录下所有文件名
files = f.listFiles();
if (!files.equals(null)) {
currentpath=f.getPath();
txt1.setText("当前目录为:"+f.getPath());
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
for (int i = 0; i < files.length; i++) {
Map<String, Object> maps = new HashMap<String, Object>();
if (files[i].isFile())
maps.put("image", img[0]);
else
maps.put("image", img[1]);
maps.put("filenames", files[i].getName());
list.add(maps);
}
simple = new SimpleAdapter(this, list,
R.layout.fileimageandtext, new String[] { "image",
"filenames" }, new int[] { R.id.images,
R.id.txtview });
listfile.setAdapter(simple);
}
} else {
System.out.println("该文件为空");
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
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