Question

我想阅读带有子目录的移动状态目录的内容以及Android手机中可用的文件。

我已经实现了一个获取Android手机内容的应用程序如下

Intent intent = new Intent();
intent.setAction(Intent.ACTION_PICK);
// Browse in the following folder.
Uri startDir = Uri.parse(Environment.getExternalStorageDirectory().getAbsolutePath());
// Files and directories
intent.setDataAndType(startDir, "vnd.android.cursor.dir/lysesoft.andexplorer.file");

我可以在不使用 andexplorer.file 的情况下获取目录和文件。或者有没有办法获取Android手机的内容？

Answer 1

“获取Android手机的内容”并不完全清楚你的意思。如果您正在讨论文件和目录列表，这里有一个简单的文件浏览器应用程序，它显示了如何：

package com.explorenm.filelist;

import java.io.File;
import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class FileList extends ListActivity {
    private String startdir = "/";
    private File workingdir = new File(startdir);
    private Context ctx;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ctx = this;

        if (workingdir.exists()) {
            setListAdapter(new ArrayAdapter<String>(ctx, R.layout.listitem, workingdir.list()));           
            ListView lv = getListView();
            lv.setTextFilterEnabled(true); // allow user to type to go to a specific item in the list      
            lv.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                        File selection = (workingdir.listFiles())[position];
                        if (selection.isDirectory()) {
                            workingdir = selection;
                            setListAdapter(new ArrayAdapter<String>(ctx, R.layout.listitem, workingdir.list()));       
                        } else {
                            Toast.makeText(getApplicationContext(), selection.getAbsolutePath(), Toast.LENGTH_SHORT).show();
                        }
                }
              });
            //registerForContextMenu(lv);
        } else {
            setContentView(R.layout.main);
            TextView tv = (TextView) findViewById(R.id.tv);
                tv.setText(workingdir.getAbsolutePath() + " does not exist.");
        }
    }
}

假设应用程序已使该文件可读（或您是root用户的root用户），则可以使用标准Java技术来读取文件内容;如何回答其他问题，例如how to read file from the phone memory in android?

Android手机内容信息

1 个答案: