java 对 ArrayAdapter 的未经检查的调用
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StackOverFlow
unchecked call to ArrayAdapter
提问by xil3
I get the following warning when I instantiate my ArrayAdapter (compiles fine):
当我实例化我的 ArrayAdapter（编译正常）时，我收到以下警告：
warning: [unchecked] unchecked call to ArrayAdapter(android.content.Context,int,java.util.List<T>) as a member of the raw type android.widget.ArrayAdapter
ArrayAdapter spinnerArrayAdapter = new ArrayAdapter(CFAMain.this, android.R.layout.simple_spinner_dropdown_item, spinnerArray);
And here's the problem line:
这是问题所在：
ArrayAdapter spinnerArrayAdapter = new ArrayAdapter(CFAMain.this, android.R.layout.simple_spinner_dropdown_item, spinnerArray);
Anyone have any ideas as to why it's giving me this warning?
任何人都知道为什么它给我这个警告？
回答by Cristian
That's because ArrayAdapterexpects you to specify which type of object it will manipulate. So, in order to avoid those warnings just do:
那是因为ArrayAdapter期望您指定它将操作的对象类型。因此，为了避免这些警告，只需执行以下操作：
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(CFAMain.this, android.R.layout.simple_spinner_dropdown_item, spinnerArray);
