PickiT

allprojects {
   repositories {
       maven {
           url 'https://s01.oss.sonatype.org/content/repositories/releases/'
       }
   }
}

dependencies {
   implementation('com.gitee.chinasoft_ohos:PickiT:1.0.0')
   ......  
}

public class MainAbilitySlice extends AbilitySlice implements PickiTCallbacks {

public class MainAbilitySlice extends AbilitySlice implements PickiTCallbacks {
    //Declare PickiT
    PickiT pickiT;

    @Override
    protected void onStart(Intent intent) {
        super.onStart(intent);
        super.setUIContent(ResourceTable.Layout_ability_main);

        //Initialize PickiT
        //context, listener, AbilitySlice
        pickiT = new PickiT(this, this, this);

    }
}

@Override
    protected void onAbilityResult(int requestCode, int resultCode, Intent resultData) {
        super.onAbilityResult(requestCode, resultCode, resultData);
        if (requestCode == SELECT_VIDEO_REQUEST) {
            if (resultCode == RESULT_OK && resultData.getUri() != null) {
                pickiT.getPath(resultData.getUri());
                originalText.setText(String.valueOf(resultData.getUri()));
            }
        }
    }

pickiT.deleteTemporaryFile(Context);

@Override
protected void onBackPressed() {
    pickiT.deleteTemporaryFile(this);
    super.onBackPressed();
}

 @Override
 protected void onStop() {
    super.onStop();
    if (!isChangingConfigurations()) {
        pickiT.deleteTemporaryFile(this);
    }
}

//When selecting a file from Drive, for example, the Uri will be returned before the file is available(if it has not yet been cached/downloaded).
//We are unable to see the progress
//Apps like Dropbox will display a dialog inside the picker
//This will only be called when selecting a drive file
@Override
public void PickiTonUriReturned() {
    //Use to let user know that we are waiting for the application to return the file
    //See the demo project to see how I used this.
}

//Called when the file creations starts (similar to onPreExecute)
//This will only be called if the selected file is not local or if the file is from an unknown file provider
@Override
public void PickiTonStartListener() {
    //Can be used to display a ProgressDialog
}

//Returns the progress of the file being created (in percentage)
//This will only be called if the selected file is not local or if the file is from an unknown file provider
@Override
public void PickiTonProgressUpdate(int progress) {
    //Can be used to update the progress of your dialog
}

//If the selected file was a local file then this will be called directly, returning the path as a String.
//String path - returned path
//boolean wasDriveFile - check if it was a drive file
//boolean wasUnknownProvider - check if it was from an unknown file provider
//boolean wasSuccessful - check if it was successful
//String reason - the get the reason why wasSuccessful returned false
@Override
public void PickiTonCompleteListener(String path, boolean wasDriveFile, boolean wasUnknownProvider, boolean wasSuccessful, String reason) {
    //Dismiss dialog and return the path
}