android - 我得到了 java.lang.IllegalStateException : No activity error when I update androidX libraries

Question

我在显示对话框时遇到了这个错误

错误:-

当我在 androidx 的库下面更新时出现这个错误

<强>1。实现 'androidx.appcompat:appcompat:1.1.0-rc01

<强>2。实现 'com.google.android.material:material:1.1.0-alpha09'

----- 这是我的确认对话框 ----

public class ConfirmDialog extends BaseDialogFragment {

public static ConfirmDialog newInstance() {
    return new ConfirmDialog();
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);      // Error Comes 

}

@Override
protected Dialog createDialog(Context activityContext) {

    AlertDialog.Builder builder;
        builder = new AlertDialog.Builder(activityContext, android.R.style.Theme_Material_Light_Dialog_Alert);

    AlertDialog alertDialog = builder.create();
    alertDialog.setCanceledOnTouchOutside(false);
    return alertDialog;
}

@Override
public void onClick(DialogInterface dialog, int which) {
    super.onDialogClick(dialog, which, which);
}
}

----- 这是我的BaseDialog ----

public abstract class BaseDialogFragment extends DialogFragment implements DialogInterface.OnClickListener {

protected OnDialogClickListener onClickListener;

protected BaseDialogFragment() {
}

protected BaseDialogFragment(OnDialogClickListener onClickListener) {
    this.onClickListener = onClickListener;
}

public static void show(BaseDialogFragment dialogFragment, Context context) {
    dialogFragment.onCreate(null);
    Dialog dialog = dialogFragment.createDialog(context);
    dialog.show();
}

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    return createDialog(getActivity());
}

protected abstract Dialog createDialog(Context activityContext);

public void setOnClickListener(OnDialogClickListener onClickListener) {
    this.onClickListener = onClickListener;
}

public void removeOnClickListener() {
    this.onClickListener = null;
}

public void onDialogClick(DialogInterface dialog, int which, Object o) {
    if (this.onClickListener != null) {
        this.onClickListener.onDialogClick(dialog, which, o);
    }
}
}

--- 最后，这是我调用我的 Confirmdialog 的时候 ---

ConfirmDialog confirmDialog = ConfirmDialog.newInstance();
        confirmDialog.setOnClickListener(new OnDialogClickListener() {
        @Override
        public void onDialogClick(DialogInterface dialog, int which, Object o) {

            }
        });

 ConfirmDialog.show(confirmDialog, activity); // When I call this

Answer 1

你可以试试:ConfirmDialog.show(confirmDialog, Activity );反而ConfirmDialog.show(confirmDialog, 这个);传递 Activity 的上下文或实例