android - java.lang.IllegalStateException : System services not available to Activities before onCreate() 错误

Question

我遇到异常:

java.lang.IllegalStateException: System services not available to Activities before onCreate()

在 onResume() 中重新初始化 layoutInflater 时:

layoutInflater = (LayoutInflater) context
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

我正在尝试更新 view flipper 的内容。任何人都可以建议我对此进行更正以解决异常。

Answer 1

看:

public class MyActivity extends Activity {

    // LayoutInflater inflater = (LayoutInflater) context 
    //         .getSystemService(Context.LAYOUT_INFLATER_SERVICE); // NOT CORRECT
    LayoutInflater inflater; // correct

    @Override
    protected void onCreate(Bundle saved) {
        super.onCreate(saved);
        inflater = (LayoutInflater) context 
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE); // correct
    }
}