SearchActivity: Fix crash when clipboard is empty

Signed-off-by: Fung <fython@163.com>

Author: fython

gradle.properties

@@ -1,6 +1,6 @@
 org.gradle.jvmargs=-Xmx1536m
 BUILD_TOOLS_VERSION=26.0.1
-VERSION_NAME=3.0.0
+VERSION_NAME=3.0.1
 TARGET_SDK_VERSION=26
-VERSION_CODE=46
+VERSION_CODE=47
 MIN_SDK_VERSION=21

mobile/src/main/kotlin/info/papdt/express/helper/ui/SearchActivity.kt

@@ -85,7 +85,7 @@ class SearchActivity : AbsActivity(), AddDialogFragment.IAddDialogObserver {
 							circularRevealActivity()
 							if (intent[EXTRA_IS_LONGCLICK]!!.asBoolean()
 									&& clipboardManager
-									.primaryClipDescription.hasMimeType(ClipDescription.MIMETYPE_TEXT_PLAIN)) {
+									?.primaryClipDescription?.hasMimeType(ClipDescription.MIMETYPE_TEXT_PLAIN) == true) {
 								Snackbar.make(rootLayout, R.string.toast_clipboard_paste, Snackbar.LENGTH_LONG)
 										.setAction(R.string.toast_clipboard_paste_action) {
 											mSearchEdit.onTextContextMenuItem(android.R.id.paste)