ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, new String[] {"abc","abc"});
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
你可能错过了上下文。
如果您在片段中使用它(比如 AFragment.java),请尝试;
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(getContext(), android.R.layout.simple_spinner_item, new String[] {"abc","abc"});
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
或者,如果您在活动中使用它(比如 AActivity.java),请尝试;
ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(AActivity.this, android.R.layout.simple_spinner_item, new String[] {"abc","abc"});
// Drop down layout style - list view with radio button
dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
// attaching data adapter to spinner
spinner.setAdapter(dataAdapter);
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