Java 具有默认主题的自定义AlertDialog

我正在尝试使用默认主题构建一个自定义的

AlertDialog

，以便在代码中的多个位置使用相同的

AlertDialog

。我通过扩展

AlertDialog

并编写自定义业务逻辑来确定对话框中的消息，从而创建了一个类。问题是，当我调用

AlertDialog.show（）

时，我看到一个黑色的覆盖层，没有显示对话框。这是我的密码：

public class ClosestShrutiDialog extends AlertDialog {

    private String mLessonId;
    private Activity mActivity;
    private View mParentView;

    private OnClickedListener mOnClickListerner;

    public ClosestShrutiDialog(@NonNull Activity activity, final String lessonId, final View parentView) {
        super(activity);
        this.mLessonId = lessonId;
        this.mActivity = activity;
        this.mParentView = parentView;
    }

    public void setmOnClickListerner(OnClickedListener mOnClickListerner) {
        this.mOnClickListerner = mOnClickListerner;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        // My business login to decide the msg related params ....

        // showing message to user to select the alternate shruti ...
        final String msg = mActivity.getResources().getString(R.string.user_alternate_shruti_msg,
                userShrutiLabel,
                closestShruti.getLabel());

        this.setMessage(msg);
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_POSITIVE,
                mActivity.getResources().getString(R.string.yes),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        if(mOnClickListerner != null) {
                            mOnClickListerner.proceedWithChange(closestShruti);
                        }
                    }
                });
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_NEGATIVE,
                mActivity.getResources().getString(R.string.cancel),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
    }

    public interface OnClickedListener {
        void proceedWithChange(final Shruti closestShruti);
    }
}

---

我不知道为什么它无法拾取默认模板并显示它。当我使用

AlerDialog.Builder（Context）

时，没有创建自定义类，我能够正确地看到对话框。有什么建议吗？

非常老的问题：-）

自定义警报对话框-

自定义对话框主题-

**--java文件代码----**
AlertDialog.Builder=新建AlertDialog.Builder（this，R.style.MyAlertDialogStyle）；
builder.setTitle（“AppCompatDialog”）；
builder.setMessage（“Lorem ipsum dolor…”）；
builder.setPositiveButton（“确定”，null）；
builder.setNegativeButton（“取消”，null）；
builder.show（）；
**----您可以将其放入xml文件中
styles.xml-自定义样式----**
#FFC107
#FFFFFF
#4CAF50
**---此外，您还可以添加新样式----**
#FFEB3B
@style/TextAppearance.AppCompat.Title
**---警觉的dialong风格---**
...
...
@样式/MyTitleTextStyle

我找到了解决方案。基本上，我不应该重写

AlertDialog

的

onCreate（）

方法。如果我这样做，那么通常会提供一个用于渲染的布局。相反，无论我在上述代码中的

onCreate（）

方法中做了什么，我都将它移到了另一个函数中，然后从类的构造中调用它，这对我来说很有用。代码类似于：

public class ClosestShrutiDialog extends AlertDialog {

    private String mLessonId;
    private Activity mActivity;
    private View mParentView;

    private OnClickedListener mOnClickListerner;

    public ClosestShrutiDialog(@NonNull Activity activity, final String lessonId, final View parentView) {
        super(activity);
        this.mLessonId = lessonId;
        this.mActivity = activity;
        this.mParentView = parentView;

        setupView();
    }

    public void setmOnClickListerner(OnClickedListener mOnClickListerner) {
        this.mOnClickListerner = mOnClickListerner;
    }


    private void setupView() {

        // My business login to decide the msg related params ....

        // showing message to user to select the alternate shruti ...
        final String msg = mActivity.getResources().getString(R.string.user_alternate_shruti_msg,
                userShrutiLabel,
                closestShruti.getLabel());

        this.setMessage(msg);
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_POSITIVE,
                mActivity.getResources().getString(R.string.yes),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        if(mOnClickListerner != null) {
                            mOnClickListerner.proceedWithChange(closestShruti);
                        }
                    }
                });
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_NEGATIVE,
                mActivity.getResources().getString(R.string.cancel),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
    }

    public interface OnClickedListener {
        void proceedWithChange(final Shruti closestShruti);
    }
}

---

我已经浏览了你之前发布的所有链接。我面临的问题是，我想显示AlertDialog的默认对话框弹出窗口，但我不想自定义它。

public class ClosestShrutiDialog extends AlertDialog {

    private String mLessonId;
    private Activity mActivity;
    private View mParentView;

    private OnClickedListener mOnClickListerner;

    public ClosestShrutiDialog(@NonNull Activity activity, final String lessonId, final View parentView) {
        super(activity);
        this.mLessonId = lessonId;
        this.mActivity = activity;
        this.mParentView = parentView;

        setupView();
    }

    public void setmOnClickListerner(OnClickedListener mOnClickListerner) {
        this.mOnClickListerner = mOnClickListerner;
    }


    private void setupView() {

        // My business login to decide the msg related params ....

        // showing message to user to select the alternate shruti ...
        final String msg = mActivity.getResources().getString(R.string.user_alternate_shruti_msg,
                userShrutiLabel,
                closestShruti.getLabel());

        this.setMessage(msg);
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_POSITIVE,
                mActivity.getResources().getString(R.string.yes),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                        if(mOnClickListerner != null) {
                            mOnClickListerner.proceedWithChange(closestShruti);
                        }
                    }
                });
        this.setButton(android.support.v7.app.AlertDialog.BUTTON_NEGATIVE,
                mActivity.getResources().getString(R.string.cancel),
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
    }

    public interface OnClickedListener {
        void proceedWithChange(final Shruti closestShruti);
    }
}