弹框(AlertDialog)和提示信息Toast字体大小颜色设置

一、AlertDialog:

             AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());                builder.setTitle("温馨提示");                builder.setMessage("是否进行下一个病人？");                builder.setPositiveButton("是", new DialogInterface.OnClickListener() {                    @Override                    public void onClick(DialogInterface dialogInterface, int i) {                      //处理你的操作

                    }                });                builder.setNegativeButton("否", null);                AlertDialog dialog = builder.create();                dialog.show();                //弹框设置字体颜色                dialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(Color.BLUE);                dialog.getButton(DialogInterface.BUTTON_NEGATIVE).setTextColor(Color.BLUE);                try {                    //获取mAlert对象                    Field mAlert = AlertDialog.class.getDeclaredField("mAlert");                    mAlert.setAccessible(true);                    Object mAlertController = mAlert.get(dialog);                    //获取mMessageView并设置大小颜色                    Field mMessage = mAlertController.getClass().getDeclaredField("mMessageView");                    mMessage.setAccessible(true);                    TextView mMessageView = (TextView) mMessage.get(mAlertController);                    mMessageView.setTextColor(Color.BLUE);//                    mMessageView.setTextSize(30);                    //获取mTitleView并设置大小颜色                    Field mTitle = mAlertController.getClass().getDeclaredField("mTitleView");                    mTitle.setAccessible(true);                    TextView mTitleView = (TextView) mTitle.get(mAlertController);                    mTitleView.setTextColor(Color.BLUE);//                    mTitleView.setTextSize(30);                } catch (NoSuchFieldException e) {                    e.printStackTrace();                } catch (IllegalAccessException e) {                    e.printStackTrace();                }

二、Toast:

private Toast mToast;private void showTip(final String str){    runOnUiThread(new Runnable() {        @Override        public void run() {            if (mToast == null) {                mToast = Toast.makeText(getApplicationContext(), "",                        Toast.LENGTH_SHORT);                LinearLayout layout = (LinearLayout) mToast.getView();                TextView tv = (TextView) layout.getChildAt(0);                tv.setTextSize(18);　　　　　　　　　 tv.setTextColor(R.color.white);            }            //mToast.cancel();            mToast.setGravity(Gravity.CENTER, 0, 0);            mToast.setText(str);            mToast.show();        }    });}

  例如：Toast提示"登录成功",直接使用showTip("登录成功")即可。  注意：fragment里面使用时将runOnUiThread替换成getActivity().runOnUiThread即可。

原文地址：https://www.cnblogs.com/dmrbell/p/11647945.html