获取外部缓存目录可能导致应用崩溃

[ruankao-mengxin]

` private File getOutputMediaFile(String ext) { ext = ext != null ? ext : "jpg"; File mediaStorageDir = getCurrentActivity().getExternalCacheDir(); if (mediaStorageDir == null) { mediaStorageDir = getCurrentActivity().getCacheDir(); } if (mediaStorageDir == null || (!mediaStorageDir.exists() && !mediaStorageDir.mkdirs())) { return null; } String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date()); File mediaFile; String mImageName = "RN_" + timeStamp + "." + ext; mediaFile = new File(mediaStorageDir.getPath() + File.separator + mImageName); Log.d("path is", mediaFile.getPath()); return mediaFile; }

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` FATAL EXCEPTION: mqt_native_modules (link to log) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: FATAL EXCEPTION: mqt_native_modules 03-10 12:49:00.577 2919 3008 E AndroidRuntime: Process: com.doquestion, PID: 2919 03-10 12:49:00.577 2919 3008 E AndroidRuntime: java.lang.NullPointerException: Attempt to invoke virtual method 'boolean java.io.File.exists()' on a null object reference 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at me.vanpan.rctqqsdk.QQSDK.getOutputMediaFile(QQSDK.java:702) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at me.vanpan.rctqqsdk.QQSDK.getOutputMediaFile(QQSDK.java:696) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at me.vanpan.rctqqsdk.QQSDK.saveBitmapToFile(QQSDK.java:643) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at me.vanpan.rctqqsdk.QQSDK.processImage(QQSDK.java:512) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at me.vanpan.rctqqsdk.QQSDK.shareImage(QQSDK.java:224) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:372) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:374) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:162) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at com.facebook.react.bridge.queue.NativeRunnable.run(Native Method) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:739) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at android.os.Looper.loop(Looper.java:135) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:194) 03-10 12:49:00.577 2919 3008 E AndroidRuntime: at java.lang.Thread.run(Thread.java:818)

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这是我修改后的获取缓存的方法，老的方法在某些没有外存的手机上可能导致CARSH