android - 如何在 android 中对齐自定义对话框中心？

Question

我正在开发我想将对话框显示为屏幕大小的应用程序。所以我使用了下面的代码。我通过这里得到了解决方案 Alert message is not displaying in alert dialog box?

 AlertDialog.Builder builder = new AlertDialog.Builder(this);
    TextView title = new TextView(this);
    title.setText("DM2");
    title.setBackgroundColor(Color.DKGRAY);
    title.setPadding(10, 10, 10, 10);
    title.setGravity(Gravity.CENTER);
    title.setTextColor(Color.WHITE);
    title.setTextSize(20);


    TextView text = new TextView(this);  
    text.setText("Hello This text");  
    text.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    text.setTextSize(20);        
    text.setGravity(Gravity.CENTER);

    //Creates a linearlayout layout and sets it with initial params
    LinearLayout ll = new LinearLayout(this);
    ll.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
    ll.setGravity(Gravity.CENTER);
    ll.addView(text); 
    builder.setCustomTitle(title);
    builder.setPositiveButton(
            "Ok", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    dialog.dismiss();
                }
            }); 

    Dialog d = builder.setView(ll).create();
    //Fills up the entire Screen
    WindowManager.LayoutParams lp = new WindowManager.LayoutParams();
    lp.copyFrom(d.getWindow().getAttributes());
    lp.width = WindowManager.LayoutParams.FILL_PARENT;
    lp.height = WindowManager.LayoutParams.FILL_PARENT;
    d.show();
    d.getWindow().setAttributes(lp); 

但我希望对话框居中对齐。现在它显示在窗口的顶部。我尝试使用 lp.garvity = Gravity.center，但没有用。如果设备方向发生变化，我需要多按 ok 按钮以关闭对话框。如何解决这个问题？

提前致谢推帕

Answer 1

我迟到了一点，但迟到总比不迟到好:-)你可以使用下面的代码:(我也看到了 here )

dialog = new Dialog(activity, android.R.style.Theme_Translucent_NoTitleBar);

dialog.setContentView(R.layout.activity_upload_photo_dialog);

Window window = dialog.getWindow();
window.setLayout(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
window.setGravity(Gravity.CENTER);

//The below code is EXTRA - to dim the parent view by 70%
LayoutParams lp = window.getAttributes();
lp.dimAmount = 0.7f;
lp.flags = LayoutParams.FLAG_DIM_BEHIND;
dialog.getWindow().setAttributes(lp);
//Show the dialog
dialog.show();

希望我帮到了...