import com.github.barteksc.pdfviewer.listener.OnPageChangeListener; //导入依赖的package包/类
protected void loadContent(String filePath, String extension, final LoadContentListener loadContentListener) {
	titleName = titleBar.getTitleTextView().getText().toString();
	if (titleName == null) {
		titleName = "";
	}
	File file = new File(filePath);
	pdfView.fromFile(file).defaultPage(0).enableSwipe(true).swipeHorizontal(false).enableDoubletap(true)
			.enableAnnotationRendering(false).password(null).scrollHandle(null)
			.onLoad(new OnLoadCompleteListener() {
				public void loadComplete(int nbPages) {
					loadContentListener.onLoadFinished(true);
				}
			})
			.onPageChange(new OnPageChangeListener() {
				public void onPageChanged(int page, int pageCount) {
					titleBar.setTitle(titleName + "(" + (page + 1) + "/" + pageCount + ")");
				}
			})
			.onError(new OnErrorListener() {
				public void onError(Throwable t) {
					loadContentListener.onLoadFinished(false);
					t.printStackTrace();
				}
			}).load();
}
 

import com.github.barteksc.pdfviewer.listener.OnPageChangeListener; //导入依赖的package包/类
private void setOnPageChangeListener(OnPageChangeListener onPageChangeListener) {
    this.onPageChangeListener = onPageChangeListener;
}
 

import com.github.barteksc.pdfviewer.listener.OnPageChangeListener; //导入依赖的package包/类
OnPageChangeListener getOnPageChangeListener() {
    return this.onPageChangeListener;
}
 

import com.github.barteksc.pdfviewer.listener.OnPageChangeListener; //导入依赖的package包/类
public Configurator onPageChange(OnPageChangeListener onPageChangeListener) {
    this.onPageChangeListener = onPageChangeListener;
    return this;
}