Dialog

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(msg);
builder.setTitle(“提示”);
builder.setPositiveButton(“确认”, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
Dialog dialog = builder.create();
Window window = dialog.getWindow();
//重新设置
WindowManager.LayoutParams lp = window.getAttributes();
int screenHeight = DisplayUtil.getInstance().getScreenHeight(this);
lp.y = (screenHeight) / 4;
window.setAttributes(lp);
dialog.show();