Android Intent 文件存储 找到文件

Intent 文件存储 找到文件

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    protected void t1() {
        int cc = 100;
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_GET_CONTENT);
        intent.setType("audio/*");
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(intent, cc);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 100 && resultCode == RESULT_OK) {
            Uri uri = data.getData();
            System.out.println(uri);
            Fpath(uri);
        }
    }

    protected void Fpath(Uri uri) {
        ContentResolver contentResolver = getContentResolver();
        long id = ContentUris.parseId(uri);

//      1.  select _id,_data from uri while _id = id;
        String[] select = new String[]{"_id","_data"};
        Cursor cursor = contentResolver.query(uri, select, "_id = " + id, null, null);

//      2.  select * from uri while _id = id;
//        Cursor cursor = contentResolver.query(uri, null, "_id = " + id, null, null);
//      3.  select * from uri;
//        Cursor cursor = contentResolver.query(uri, null, null, null, null);

        while (cursor.moveToNext()) {
            int cont = cursor.getColumnCount();
            for (int i = 0; i < cont; i++) {
                System.out.print(cursor.getColumnName(i) + ">> ");
                System.out.println(cursor.getString(i));
            }
        }
    }