{"id":53,"date":"2021-04-30T13:30:26","date_gmt":"2021-04-30T05:30:26","guid":{"rendered":"https:\/\/jinhaihan.top\/WordPress\/?p=53"},"modified":"2021-10-07T17:41:03","modified_gmt":"2021-10-07T09:41:03","slug":"view%e8%bd%ac%e6%8d%a2%e6%88%90bitmap","status":"publish","type":"post","link":"https:\/\/www.jinhaihan.top\/WordPress\/view%e8%bd%ac%e6%8d%a2%e6%88%90bitmap\/","title":{"rendered":"view\u8f6c\u6362\u6210Bitmap"},"content":{"rendered":"<h1>View\u8f6c\u6362\u6210Bitmap<\/h1>\n<p>\u6709\u4e9b\u8bbe\u5907\u8fde\u63a5\u7740\u526f\u5c4f\uff0c\u526f\u5c4f\u53ea\u80fd\u63a5\u53d7bitmap\u7684\u663e\u793a\uff0c\u4e3a\u4e86\u65b9\u4fbf\uff0c\u5e0c\u671b\u5c06xml\u7684layout\u5e03\u5c40\u8f6c\u6362\u6210bitmap\uff0c\u800c\u8fd9\u4e2aview\u663e\u7136\u5c31\u4e0d\u80fd\u5728\u754c\u9762\u4e0a\u663e\u793a\u3002<\/p>\n<p>Kotlin\u4ee3\u7801\uff1aJAVA\u540c\u7406<\/p>\n<pre><code class=\"language-kotlin\">\/\/\u901a\u8fc7\u5e03\u5c40\u521b\u5efaview\nval view = LayoutInflater.from(this@MainActivity).inflate(R.layout.subscreen_free_pay, null)\n\/\/\u5982\u679c\u6709\u9700\u8981\u7684\u8bdd\u4fee\u6539view\u5185\u5bb9\nvar feeText = view.findViewById&lt;TextView&gt;(R.id.sub_fee)\nfeeText.text = &quot;aaa&quot;\n\/\/\u5141\u8bb8cache\nview.isDrawingCacheEnabled = true;\n\/\/\u5fc5\u8981\u6b65\u9aa4\uff1a\u8bbe\u5b9a\u7316\u72c2\nview.measure(\n    View.MeasureSpec.makeMeasureSpec(320, View.MeasureSpec.EXACTLY),\n    View.MeasureSpec.makeMeasureSpec(240, View.MeasureSpec.EXACTLY))\n\/\/\u5fc5\u8981\u6b65\u9aa4\nview.layout(0, 0, view.measuredWidth, view.measuredHeight);\n\/\/\u751f\u6210cache\nview.buildDrawingCache();\n\/\/\u5982\u679c\u4e0a\u9762\u6b65\u9aa4\u6ca1\u6709\u8d70\u7684\u8bdd\uff0c\u83b7\u53d6\u7684bitmap\u4f1a\u662fnull\nbitmap = view.drawingCache<\/code><\/pre>\n<p>\u53e6\u5916\u9644Bitmap\u8f6cbyte[]\u65b9\u6cd5:<\/p>\n<pre><code class=\"language-Kotlin\">fun Bitmap2Bytes(bm: Bitmap): ByteArray? {\n    val baos = 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