Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.Log;

public class Main {
    public static File getFile(Context context, Uri uri, boolean forceCreation) {

        if (!forceCreation && "file".equalsIgnoreCase(uri.getScheme())) {
            return new File(uri.getPath());
        }

        File file = null;

        try {
            File root = context.getFilesDir();
            if (root == null) {
                throw new Exception("data dir not found");
            }
            file = new File(root, getFilename(context, uri));
            file.delete();
            InputStream is = context.getContentResolver().openInputStream(uri);
            OutputStream os = new FileOutputStream(file);
            byte[] buf = new byte[1024];
            int cnt = is.read(buf);
            while (cnt > 0) {
                os.write(buf, 0, cnt);
                cnt = is.read(buf);
            }
            os.close();
            is.close();
            file.deleteOnExit();
        } catch (Exception e) {
            Log.e("OpenFile", e.getMessage(), e);
        }
        return file;
    }

    public static String getPath(Context context, Uri uri) {
        if ("content".equalsIgnoreCase(uri.getScheme())) {
            String[] projection = { "_data" };
            Cursor cursor;

            try {
                cursor = context.getContentResolver().query(uri, projection, null, null, null);
                int column_index = cursor.getColumnIndex("_data");
                if (column_index != -1 && cursor.moveToFirst()) {
                    String path = cursor.getString(column_index);
                    if (path == null) {
                        path = getNewTemporaryFilePath(context, uri);
                    }
                    return path;
                } else {
                    return getNewTemporaryFilePath(context, uri);
                }
            } catch (Exception e) {
                return getNewTemporaryFilePath(context, uri);
            }
        } else if ("file".equalsIgnoreCase(uri.getScheme())) {
            return uri.getPath();
        }

        return null;
    }

    /**
     * Return the filename from a uri.
     */
    public static String getFilename(Context c, Uri uri) {
        try {
            String scheme = uri.getScheme();
            if (scheme.equals("file")) {
                return uri.getLastPathSegment();
            } else if (scheme.equals("content")) {
                String[] proj = { MediaStore.Files.FileColumns.DISPLAY_NAME };
                Cursor cursor = c.getContentResolver().query(uri, proj, null, null, null);
                if (cursor != null && cursor.getCount() != 0) {
                    int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Files.FileColumns.DISPLAY_NAME);
                    cursor.moveToFirst();
                    return cursor.getString(columnIndex);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static String getNewTemporaryFilePath(Context context, Uri uri) {
        File file = getFile(context, uri, true);
        return file == null ? null : file.getPath();
    }
}