下载完成后如何显示app选择器 _完成

春衣少年当酒歌，起舞四顾以笑和。这篇文章主要讲述下载完成后如何显示app选择器相关的知识，希望能为你提供帮助。
下载完成后，应用选择器打开，根据下载文件的文件扩展名显示某个应用程序，或者打开一个应用程序，当用户点击快餐栏中的打开时，该应用程序被选为该文件扩展名的默认应用程序。
我尝试实现这样的事情：

文章图片
对于pdf文件，它显示了这样的东西

文章图片
对于图像，它显示了这样的东西
我的守则

webView.setDownloadListener(new DownloadListener() { public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { int last_index = url.lastIndexOf("/"); subPath[0] = url.substring(last_index, url.length()); //downloads file nameDownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); request.allowScanningByMediaScanner(); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); //Notify client once download is completed! request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, subPath[0]); DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE); if (dm != null) { dm.enqueue(request); } showSnackBar(MainTab.this,"Downloading file", false); } }); BroadcastReceiver onComplete=new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { showSnackBar(MainTab.this,"Downloading finished", true); } }; registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); public void showSnackBar(Activity activity, String message, boolean bool){ View rootView = activity.getWindow().getDecorView().findViewById(android.R.id.content); Snackbar snackbar = Snackbar.make(rootView, message, Snackbar.LENGTH_LONG); if(bool){ snackbar.setAction(R.string.open, new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(getApplicationContext(), "Downloaded File open", Toast.LENGTH_LONG).show(); Intent baseIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(subPath[0])); Intent chooserIntent = Intent.createChooser(baseIntent, "Open with"); if (baseIntent.resolveActivity(getPackageManager()) != null) { startActivity(chooserIntent); }} }); } snackbar.show(); }

清单文件：

< uses-permission android:name="android.permission.INTERNET" /> < uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> < application android:allowBackup="false" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme"> < activity android:name=".MainActivity" android:configChanges="keyboardHidden|orientation|screenSize"> < intent-filter> < action android:name="android.intent.action.MAIN" /> < category android:name="android.intent.category.LAUNCHER" /> < /intent-filter> < intent-filter> < action android:name="android.intent.action.VIEW" /> < category android:name="android.intent.category.BROWSABLE" /> < data android:mimeType="text/html"/> < data android:mimeType="text/pdf"/> < data android:mimeType="audio/*"/> < data android:mimeType="video/*"/> < data android:mimeType="image/*"/> < data android:scheme="http" /> < data android:scheme="https" /> < /intent-filter> < /activity> < /application>

请帮我解决一下。提前致谢。
编辑：
修改后的代码根据@Reaz Murshed

@Override public void onClick(View v) { Toast.makeText(getApplicationContext(), "Downloaded File open", Toast.LENGTH_LONG).show(); String extension = MimeTypeMap.getFileExtensionFromUrl(new File(subPath[0]).getPath()); String type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension); Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); intent.setDataAndType(Uri.fromFile(new File(subPath[0])), type); getApplicationContext().startActivity( intent ); }

【下载完成后如何显示app选择器】logcat的：

02-10 16:47:38.966 16467-16467/? I/art: Not late-enabling -Xcheck:jni (already on) 02-10 16:47:39.023 16467-16473/? I/art: Debugger is no longer active 02-10 16:47:39.034 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_dependencies_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_dependencies_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.208 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_0_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_0_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.240 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_1_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_1_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.260 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_2_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_2_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.279 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_3_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_3_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.300 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_4_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_4_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.338 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_5_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_5_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.362 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_6_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_6_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.392 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_7_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_7_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.413 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_8_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_8_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.432 16467-16467/? W/art: Failed execv(/system/bin/dex2oat --runtime-arg -classpath --runtime-arg--debuggable --instruction-set=x86 --instruction-set-features=smp,ssse3,-sse4.1,-sse4.2,-avx,-avx2 --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/app/biz.coolpage.aashish.browser-1/split_lib_slice_9_apk.apk --oat-file=/data/dalvik-cache/x86/data@app@biz.coolpage.aashish.browser-1@split_lib_slice_9_apk.apk@classes.dex) because non-0 exit status 02-10 16:47:39.434 16467-16467/? W/System: ClassLoader referenced unknown path: /data/app/biz.coolpage.aashish.browser-1/lib/x86 02-10 16:47:39.439 16467-16467/? I/InstantRun: starting instant run server: is main process 02-10 16:47:39.524 16467-16467/? W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable 02-10 16:47:39.700 16467-16505/? D/OpenGLRenderer: Use EGL_SWAP_BEHAVIOR_PRESERVED: true[ 02-10 16:47:39.702 16467:16467 D/] HostConnection::get() New Host Connection established 0xaa95e200, tid 16467[ 02-10 16:47:39.734 16467:16505 D/] HostConnection::get() New Host Connection established 0xaa95e800, tid 16505 02-10 16:47:39.737 16467-16505/? I/OpenGLRenderer: Initialized EGL, version 1.4 02-10 16:47:39.737 16467-16505/? W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without... 02-10 16:47:39.747 16467-16505/? D/EGL_emulation: eglCreateContext: 0xaa960360: maj 3 min 1 rcv 4 02-10 16:47:39.753 16467-16505/? D/EGL_emulation: eglMakeCurrent: 0xaa960360: ver 3 1 (tinfo 0xaa94ee60)