SelectFile Library for Processing Android Mode

Android has no default Open & Save file dialogs. SelectFile library for Processing provides UI dialogs for these methods in Android mode:

• selectInput() - select any file
• selectFolder() - select any folder
• selectOutput() - save file

Tested with Processing 3.0.

All SelectFile features	.selectFile() in action

Check library examples to see related code.

Installation into PDE

1. In Processing go to Sketches > Import Library > Add Library...
2. Search for SelectFile
3. Click install.

Downloads or Installation into APDE

If you want to install SelectFile manually, you can find the latest binary package here: http://andrusiv.com/android-select-file/download/SelectFile.zip.

If you're using APDE app, please download from the link mentioned above and import compressed library (.zip file) into APDE.

Usage

1. After you installed the library, check out an example here: File > Examples > Contributed Libraries > SelectFile.
2. Add correct READ/WRITE permissions to your sketch. Go to Android > Sketch Permissions and choose READ_EXTERNAL_STORAGE and WRITE_EXTERNAL_STORAGE.

Building From Source

1. Install ant. On Mac OS X: brew install ant
2. cd resources
3. ant
4. SelectFile will appear in your Sketchbooks folder. On Mac OS X the default location is ~/Documents/Processing.

Using in Pure Android

The code responsible for selecting files does not depend on Processing and can be reused in other Android projects. Look into SelectLibrary class.

Here's an example, how one can use the library from Android:

`MainActivity.java` source code.

Activity with three buttons and a text field. When someone accomplishes selected action (select file, folder or save file) text field changes its text to the selected path.

public class MainActivity extends Activity {

  // define a constant for activity result
  protected static final int PATH_RESULT = 123;

  private TextView tv = null;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    tv = (TextView) findViewById(R.id.textView1);

    Button b1 = (Button) findViewById(R.id.button1);
    Button b2 = (Button) findViewById(R.id.button2);
    Button b3 = (Button) findViewById(R.id.button3);

    b1.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Intent i = new Intent(MainActivity.this, SelectActivity.class);
        i.putExtra(SelectActivity.EX_PATH, Environment.getExternalStorageDirectory().getAbsolutePath());
        i.putExtra(SelectActivity.EX_STYLE, SelectMode.SELECT_FILE);
        startActivityForResult(i, PATH_RESULT);
      }
    });

    b2.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Intent i = new Intent(MainActivity.this, SelectActivity.class);
        i.putExtra(SelectActivity.EX_PATH, Environment.getExternalStorageDirectory().getAbsolutePath());
        i.putExtra(SelectActivity.EX_STYLE, SelectMode.SELECT_FOLDER);
        startActivityForResult(i, PATH_RESULT);
      }
    });

    b3.setOnClickListener(new OnClickListener() {
      public void onClick(View v) {
        Intent i = new Intent(MainActivity.this, SelectActivity.class);
        i.putExtra(SelectActivity.EX_PATH, Environment.getExternalStorageDirectory().getAbsolutePath());
        i.putExtra(SelectActivity.EX_STYLE, SelectMode.SAVE_FILE);
        startActivityForResult(i, PATH_RESULT);
      }
    });

  }

  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == PATH_RESULT && resultCode == RESULT_OK) {
      tv.setText(data.getStringExtra(SelectActivity.EX_PATH_RESULT));
    } else {
      super.onActivityResult(requestCode, resultCode, data);
    }
  }
}

`activity_main.xml` activity layout source.

Layout for the activity:

<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" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Selected file path"
        tools:context=".TestActivity" />

    <Button
        android:id="@+id/button1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open File" />

    <Button
        android:id="@+id/button2"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Open Folder" />

    <Button
        android:id="@+id/button3"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Save File" />

</LinearLayout>

@author ostap.andrusiv