介绍 File File =, Environment.getExternalStoragePublicDirectory(时间+ Environment.DIRECTORY_DCIM “/PDFTest.pdf");
File 才能;dexCacheFile;//,才能获取需要打印的webview适配器
PrintDocumentAdapter 才能;printAdapter;
PageRange才能[],范围;
ParcelFileDescriptor 才能;描述符;
,/* *
,,一个*,@param webView
,,*/private 才能;void printPDFFile (WebView webView), {
,,,if (android.os.Build.VERSION.SDK_INT 祝辞=,android.os.Build.VERSION_CODES.KITKAT), {
,,,,,/* *
,,,,,,*,android 5.0之后,出于对动态注入字节码安全性德考虑,已经不允许随意指定字节码的保存路径了,需要放在应用自己的包名文件夹下。
,,,,,*/,,,,,//新的创建DexMaker缓存目录的方式,直接通过上下文获取路径
,,,,,dexCacheFile =, getDir (“dex",, 0);
,,,,,if (! dexCacheFile.exists ()), {
,,,,,,,dexCacheFile.mkdir ();
,,,,,}
,,,,,try {
,,,,,,,//创建待写入的PDF文件,pdfFilePath为自行指定的PDF文件路径
,,,,,,,if (file.exists ()), {
,,,,,,,,,file.delete ();
,,,,,,,}
,,,,,,,file.createNewFile ();
,,,,,,,descriptor =, ParcelFileDescriptor.open(文件,,ParcelFileDescriptor.MODE_READ_WRITE);
,,,,,,,//,设置打印参数
,,,,,,,PrintAttributes attributes =, new PrintAttributes.Builder ()
,,,,,,,,,,,.setMediaSize (PrintAttributes.MediaSize.ISO_A4)
,,,,,,,,,,,.setResolution (new PrintAttributes.Resolution (“id",, Context.PRINT_SERVICE,, 300,, 300))
,,,,,,,,,,,.setColorMode (PrintAttributes.COLOR_MODE_COLOR)
,,,,,,,,,,,.setMinMargins (PrintAttributes.Margins.NO_MARGINS)
,,,,,,,,,,,.build ();
,,,,,,,//打印所有界面
,,,,,,,ranges =, new PageRange [] {PageRange.ALL_PAGES};
,,,,,,,printAdapter =, webView.createPrintDocumentAdapter ();
,,,,,,,//,开始打印
,,,,,,,printAdapter.onStart ();
,,,,,,,printAdapter.onLayout(属性,属性,new CancellationSignal (),, getLayoutResultCallback (new InvocationHandler (), {
,,,,,,,,@Override
,,,,,,,,,public Object 调用(Object 代理,Method 方法,对象[],args), throws Throwable {
,,,,,,,,,,,if (method.getName () .equals (“onLayoutFinished")), {
,,,,,,,,,,,,,//,监听到内部调用了onLayoutFinished()方法,即打印成功
,,,,,,,,,,,,,onLayoutSuccess ();
,,,,,,,,,,,},{else
,,,,,,,,,,,,,//,监听到打印失败或者取消了打印
,,,,,,,,,,,}
,,,,,,,,,,,return 零;
,,,,,,,,,}
,,,,,,,},,dexCacheFile.getAbsoluteFile ()), new 包());
,,,,,},catch (IOException e), {
,,,,,,,e.printStackTrace ();
,,,,,}
,,,}
,,}
,/* *
,,*,@throws IOException
,,*/private 才能;void onLayoutSuccess (), throws IOException {
,,,if (Build.VERSION.SDK_INT 祝辞=,Build.VERSION_CODES.KITKAT), {
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本篇文章给大家分享的是有关如何在Android项目中将webview转换为PDF、小编觉得挺实用的,因此分享给大家学习,希望大家阅读完这篇文章后可以有所收获,话不多说,跟着小编一起来看看吧。
完整代码如下:
