安卓-画廊应用程序NullPointerException - OnePlus One
安卓-画廊应用程序NullPointerException - OnePlus One
提问于 2016-12-28 13:23:42
我要用这个代码打开我的应用程序-
Intent galleryIntent = new Intent(Intent.ACTION_VIEW, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
galleryIntent.setType("image/*");
startActivity(galleryIntent);当我选择“用画廊打开”时，图片库应用程序与OnePlus One设备上的堆栈跟踪崩溃-
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.cyngn.gallerynext/com.cyngn.gallerynext.app.fullscreenviewer.FullscreenViewer}: java.lang.NullPointerException: uriString
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2358)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2420)
at android.app.ActivityThread.access$900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699)
Caused by: java.lang.NullPointerException: uriString
at android.net.Uri$StringUri.<init>(Uri.java:470)
at android.net.Uri$StringUri.<init>(Uri.java:460)
at android.net.Uri.parse(Uri.java:432)
at com.cyngn.gallerynext.app.fullscreenviewer.FullscreenViewer.a(SourceFile:305)
at com.cyngn.gallerynext.app.fullscreenviewer.FullscreenViewer.onCreate(SourceFile:217)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2311)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2420)
at android.app.ActivityThread.access$900(ActivityThread.java:154)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1321)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5292)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:904)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:699) 我不想将特定的URI传递给它，我只想让它打开默认的图片库文件夹。我怎样才能避免这场车祸？
回答 2
Stack Overflow用户
回答已采纳
发布于 2016-12-28 13:47:42
不用setType("image/*")
Intent galleryIntent = new Intent(Intent.ACTION_VIEW, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivity(galleryIntent);yourIntent.setType(String mimeType) --这是表示您想要得到的MIME类型数据。使用android.provider.MediaStore.Images.Media，您有常量的MIME。我想，在这里你会发现更多的文档
Stack Overflow用户
发布于 2016-12-28 13:30:40
如果您只想 open应用程序(因为您编写:我只希望它打开默认的图库文件夹)：
Intent intent = new Intent("com.cyngn.gallerynext");或
如果您想从图库获取任何数据，看这篇文章怎么做。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/41363039
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