質問編集履歴
3
クラッシュログを載せておきます。
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File without changes
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body
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@@ -139,9 +139,67 @@
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139
139
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140
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### 試したこと
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141
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142
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+
クラッシュログを載せておきます。
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143
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```
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144
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2020-03-26 18:51:53.846 5070-5070/com.example.expandable_cardview_2 E/AndroidRuntime: FATAL EXCEPTION: main
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142
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-
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145
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Process: com.example.expandable_cardview_2, PID: 5070
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146
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java.lang.IllegalStateException: v.item_toggle_bottun must not be null
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147
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at com.example.expandable_cardview_2.ExpandableCardViewAdapter$ItemHolder.<init>(ExpandableCardViewAdapter.kt:24)
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148
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at com.example.expandable_cardview_2.ExpandableCardViewAdapter.onCreateViewHolder(ExpandableCardViewAdapter.kt:36)
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149
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at androidx.recyclerview.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:7078)
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150
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+
at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6235)
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151
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+
at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6118)
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152
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+
at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6114)
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153
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+
at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2303)
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154
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+
at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1627)
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155
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+
at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1587)
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156
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at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:665)
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157
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+
at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4134)
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158
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+
at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:3851)
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159
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+
at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4404)
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160
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+
at android.view.View.layout(View.java:17523)
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161
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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162
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+
at androidx.constraintlayout.widget.ConstraintLayout.onLayout(ConstraintLayout.java:1915)
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163
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+
at android.view.View.layout(View.java:17523)
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164
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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165
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+
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
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166
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+
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
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167
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+
at android.view.View.layout(View.java:17523)
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168
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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169
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at androidx.appcompat.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:446)
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170
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+
at android.view.View.layout(View.java:17523)
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171
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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172
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+
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
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173
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+
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
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174
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+
at android.view.View.layout(View.java:17523)
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175
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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176
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at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1741)
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177
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+
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1585)
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178
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+
at android.widget.LinearLayout.onLayout(LinearLayout.java:1494)
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179
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+
at android.view.View.layout(View.java:17523)
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180
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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181
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+
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:323)
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182
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+
at android.widget.FrameLayout.onLayout(FrameLayout.java:261)
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183
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+
at com.android.internal.policy.DecorView.onLayout(DecorView.java:724)
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184
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+
at android.view.View.layout(View.java:17523)
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185
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+
at android.view.ViewGroup.layout(ViewGroup.java:5612)
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186
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+
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2342)
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187
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+
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2069)
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188
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+
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1246)
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189
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+
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6301)
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190
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+
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:871)
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191
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+
at android.view.Choreographer.doCallbacks(Choreographer.java:683)
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192
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+
at android.view.Choreographer.doFrame(Choreographer.java:619)
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193
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+
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:857)
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194
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+
at android.os.Handler.handleCallback(Handler.java:751)
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195
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+
at android.os.Handler.dispatchMessage(Handler.java:95)
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143
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-
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196
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+
at android.os.Looper.loop(Looper.java:154)
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197
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+
at android.app.ActivityThread.main(ActivityThread.java:6077)
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198
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+
at java.lang.reflect.Method.invoke(Native Method)
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199
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+
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
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200
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+
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:756)
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144
201
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202
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+
```
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145
203
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### 補足情報（FW/ツールのバージョンなど）
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146
204
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147
205
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Kotlin version:1.3.71 （最新バージョンです）
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2
タイトルを変更しました。
title
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@@ -1,1 +1,1 @@
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1
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-
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1
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+
CardView で、ボタンを押したら Card が出てくるはずだが、ボタンを押すとアプリが強制終了する
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body
CHANGED
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File without changes
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1
やりたいことを、より詳しく書きました。
title
CHANGED
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File without changes
|
body
CHANGED
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@@ -12,6 +12,7 @@
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12
12
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このような感じで青いリストは表示できるし、書き込みもできる状態です。
|
|
13
13
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そして、黄色いリストも出てくるようなコードを書いてあるのですが、赤いボタンを押しても黄色いリストが出てこず、アプリがダウンしてしまいます。
|
|
14
14
|
|
|
15
|
+
アプリがダウンせず、ちゃんと黄色いリストが出てくるようにしたい。
|
|
15
16
|
### 該当のソースコード
|
|
16
17
|
|
|
17
18
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```Kotlin
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