自定义Dialog中得EditText弹出键盘

　自定义了Dialog然后弹出软键盘，但是键盘不属于当前活动窗口

代码如下
private View textEntryView;
AlertDialog myDialog = null;
private EditText post;

private void showMyDialog() {
LayoutInflater factory = LayoutInflater.from(this);
textEntryView = factory.inflate(R.layout.managerview, null);
textEntryView.findFocus();
myDialog = new AlertDialog.Builder(this).create();
myDialog.show();

myDialog.getWindow().setContentView(textEntryView);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE);
InputMethodManager imm = (InputMethodManager)
getSystemService(INPUT_METHOD_SERVICE);
imm.showSoftInput(textEntryView, 0); //显示软键盘
imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS); //显示软键盘

}


效果图：