Bitmapfactory.decoderesource 返回null
Web前言 在应用的开发中,我们必然会接触到应用通知这个知识,而在通知是随着Android版本进行不断变化,为了能在高版本和低版本中使用,就需要开发者去做适配,也属于查漏补 … WebApr 22, 2014 · 1 Answer. This is a case of me being dumb but here is the answer for posterity. Bitmap is not the same as BitmapDrawable. Resource pointer to a BitmapDrawable. Bitmap pressed = BitmapFactory.decodeResource (res, R.drawable.play_button_pressed_res); //this is the id for the xml referring to the png.
Bitmapfactory.decoderesource 返回null
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WebFeb 17, 2024 · Bitmap bmp = BitmapFactory.decodeResource (resources, R.drawable.ic_image); 其中 R.drawable.ic_image ,此代码在 4.4 上运行正常,但在 5.0 … WebBitmapFactory.decodeResource(this.getResources(),R.drawable.icon,options)== null)可以很好地进行重新采样。. 第一个具有options.inJustDecodeBounds = true …
WebMay 3, 2024 · 确实啊,人家白纸黑字的写了,这个方法要么返回一个从原始图片文件得到的 Bitmap,否则返回 null,而且传入的 Option 参数也是对应的类似采样率这样的图片编码相关的需求 —— 这段代码的的确确只能用来将「原始的图片文件」加载为 Bitmap,是我用错了资源类型,锅在我自己脑袋上。 WebIf you are willing to use Android KTX for Kotlin you can use the extension method Drawable#toBitmap () to achieve the same effect as the other answers: val bitmap = AppCompatResources.getDrawable (requireContext (), drawableId).toBitmap () or. val bitmap = AppCompatResources.getDrawable (context, drawableId).toBitmap ()
WebAug 1, 2012 · I am wondering if decodeResource (Resources res, int id, BitmapFactory.Options opts) takes into account the drawable-ldpi,mdpi,hdpi etc. folders. ... BitmapFactory.decodeResource(getResources(), R.drawable.my_image_name); ... android Null pointer exception when trying to blur a bitmap-1. … WebApr 6, 2024 · ①减小宽高BitmapFactory.Options.inSampleSize. inSampleSize是BitmapFactory.Options的一个属性,改变它即可改变图片的宽高。如果该值设置为大于1的值(小于1的值即为1),就会请求解码器对原始图像进行二次采样,返回较小的图像以节省 …
WebBitmapFactory.Options options= new BitmapFactory.Options (); // Create object of bitmapfactory's option method for further option use options.inPurgeable = true; // inPurgeable is used to free up memory while required Bitmap songImage1 = BitmapFactory.decodeByteArray(thumbnail, 0, thumbnail.length,options); //Decode …
WebJan 28, 2024 · 问题描述. 我似乎无法弄清楚.我有2个具有不同特征的Java类,每个呼叫bitmapfactory.decoderesource要获得相同的图像资源,一个返回位图,而另一个返 … can baby bella mushrooms be eaten rawWebOct 7, 2024 · Setting the inJustDecodeBounds property to true while decoding avoids memory allocation, returning null 用于位图对象。. 根据 @Jeroen VL 更改options.inJustDecodeBounds = false解决了该问题. 1. Bitmap bitmap = BitmapFactory.decodeFile (file.getAbsolutePath ()); 如果返回,则返回null. 图像的文件 … fishing ban period in india 2021WebDec 9, 2010 · BitmapFactory.decodeResource returns null value. I am tring to load bitmaps from an internal resource in a View object (the source itself is in "drawable" files). import android.content.Context; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import … fishing banks peninsulaWeb我在Logcat中收到一个intent交付错误,当我调用这个函数时,app意外停止;Android:传递结果失败ResultInfo {who = null,request = 1,result = -1,data = Intent … fishing ban perthWebMar 5, 2013 · BitmapFactory.decodeResource () 为 xml drawable 中定义的形状返回 null. [英]BitmapFactory.decodeResource () returns null for shape defined in xml drawable. 2014-06-24 14:19:30 4 29620 android / android-drawable / xml-drawable. 为什么使用inPreferredConfig = RGB565的BitmapFactory.decodeResource可以按比例放大我的图 … can baby birds eat breadhttp://www.uwenku.com/question/p-fsqttihn-bkt.html fishing ban periodWebApr 14, 2024 · 获取验证码. 密码. 登录 can baby be used for mineral oil