我正在尝试开发购物车.我想在SQL4数据库的Custom ListView中显示产品详细信息,点击按钮.但是我在Adapter.My 错误日志 和Adapter.java给出了一些错误.请帮我解决.
错误日志
12-04 11:26:30.856: E/AndroidRuntime(24522): FATAL EXCEPTION: main
12-04 11:26:30.856: E/AndroidRuntime(24522): java.lang.NullPointerException
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.AbsListView.obtainView(AbsListView.java:1317)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.ListView.measureHeightOfChildren(ListView.java:1198)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.ListView.onMeasure(ListView.java:1109)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.view.View.measure(View.java:8171)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1012)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.LinearLayout.measureVertical(LinearLayout.java:381)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.LinearLayout.onMeasure(LinearLayout.java:304)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.view.View.measure(View.java:8171)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3132)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.widget.FrameLayout.onMeasure(FrameLayout.java:245)
12-04 11:26:30.856: E/AndroidRuntime(24522): at android.view.View.measure(View.java:8171)
12-04 11:26:30.856: E/AndroidRuntime(24522): …