Android如何关闭AlertDialog.Builder对话框呢？AlertDialog.Builder对话框没有类似finish()或者dismiss()这样的方法。
但是它的父类AlertDialog有dismiss方法，而且AlertDialog.Builder在.show()的时候会得到一个AlertDialog对象，我们就可以用dismiss方法将该Builder关闭。
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AlertDialog.Builder builder = new AlertDialog.Builder(this); AlertDialog dialog = builder.show(); dialog.dismiss(); |
关于Android阻止AlertDialog关闭具体代码如下所示：
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AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());builder.setTitle("测试");LayoutInflater inflater = getActivity().getLayoutInflater();View view = inflater.inflate(R.layout.dialogfragment_num_input, null);builder.setView(view);builder.setPositiveButton("确定",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int id) {Field field = null;try {//通过反射获取dialog中的私有属性mShowingfield = dialog.getClass().getSuperclass().getDeclaredField("mShowing");field.setAccessible(true);//设置该属性可以访问} catch (Exception ex) {}String inputValue = String.valueOf(mEdit.getText());if (inputValue == null || "".equals(inputValue)) {try {//设置dialog不可关闭field.set(dialog, false);dialog.dismiss();} catch (Exception ex) {}} else {////做自己的事//try {//关闭field.set(dialog, true);dialog.dismiss();} catch (Exception ex) {}}}});builder.setNegativeButton("取消",new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int id) {Field field = null;try {//通过反射获取dialog中的私有属性mShowingfield = dialog.getClass().getSuperclass().getDeclaredField("mShowing");field.setAccessible(true);//设置该属性可以访问} catch (Exception ex) {}try {field.set(dialog, true);dialog.dismiss();} catch (Exception ex) {}}});builder.create(); |
