java - Android 自定义进度对话框 - setCancelable()

Question

我创建了一个自定义的进度对话。重写 setCancelable() 和 setCanceledOnTouchOutside() 等属性对我不起作用。

public class CustomProgressDialogue extends ProgressDialog {

    private final Context context;

    public CustomProgressDialogue(Context context) {
        super(context);
        this.context = context;
        getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.progress_view);

    }

    // Didn't worked
    @Override
    public void setCancelable(boolean flag) {
        super.setCancelable(false);
    }
    // Didn't worked
    @Override
    public void setCanceledOnTouchOutside(boolean cancel) {
        super.setCanceledOnTouchOutside(false);
    }
}

但在实例创建后同时应用相同的属性。

// Worked
progressDialogue = new CustomProgressDialogue(getContext());
        progressDialogue.setCancelable(false);
        progressDialogue.setCanceledOnTouchOutside(false);

有人能解释一下吗？

Answer 1

不是覆盖可取消的方法，而是创建一个像这样的静态方法，然后将所需的选项传递给它

下面是 ProgressDialog 类是如何做到这一点的:

 public static ProgressDialog show(Context context, CharSequence title,
            CharSequence message, boolean indeterminate,
            boolean cancelable, OnCancelListener cancelListener) {
        ProgressDialog dialog = new ProgressDialog(context);
        dialog.setTitle(title);
        dialog.setMessage(message);
        dialog.setIndeterminate(indeterminate);
        dialog.setCancelable(cancelable);
        dialog.setOnCancelListener(cancelListener);
        dialog.show();
        return dialog;
    }