效果如下： 

 示例代码（非上方图片源码）：

var imgPath = plus.io.convertLocalFileSystemURL("_www/static/img/xxx.jpg");
uni.getImageInfo({src:imgPath,success(info) {var TextPaint = plus.android.importClass('android.text.TextPaint');var Typeface = plus.android.importClass('android.graphics.Typeface');var Canvas = plus.android.importClass('android.graphics.Canvas');var Bitmap = plus.android.importClass('android.graphics.Bitmap');var BitmapFactory = plus.android.importClass('android.graphics.BitmapFactory');var ttfPath = plus.io.convertLocalFileSystemURL("_www/static/font/xxx.ttf");var typeface = Typeface.createFromFile(path);var bitmap = BitmapFactory.decodeFile(imgPath);var newBitmap = Bitmap.createBitmap(info.width, info.height, Bitmap.Config.ARGB_88;var canvas = new Canvas(newBitmap);canvas.drawBitmap(bitmap, 0, 0, null);var mPaint = new TextPaint();mPaint.setTypeface(typeface);canvas.drawText("文字测试", 300, 300, mPaint);	//绘制文字canvas.save(Canvas.ALL_SAVE_FLAG);canvas.restore()}
});