当我使用Toast在屏幕上显示一些弹出文本时,它会将文本显示在屏幕底部上方一点的位置,这是默认位置。

现在我想把它显示在屏幕中间,或者根据我的选择显示在某个地方。

有人能指导我如何实现这个目标吗?


当前回答

//一个自定义toast类,可以显示自定义或默认toast)

public class ToastMessage {
            private Context context;
            private static ToastMessage instance;

            /**
             * @param context
             */
            private ToastMessage(Context context) {
                this.context = context;
            }

            /**
             * @param context
             * @return
             */
            public synchronized static ToastMessage getInstance(Context context) {
                if (instance == null) {
                    instance = new ToastMessage(context);
                }
                return instance;
            }

            /**
             * @param message
             */
            public void showLongMessage(String message) {
                Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
            }

            /**
             * @param message
             */
            public void showSmallMessage(String message) {
                Toast.makeText(context, message, Toast.LENGTH_LONG).show();
            }

            /**
             * The Toast displayed via this method will display it for short period of time
             *
             * @param message
             */
            public void showLongCustomToast(String message) {
                LayoutInflater inflater = ((Activity) context).getLayoutInflater();
                View layout = inflater.inflate(R.layout.layout_custom_toast, (ViewGroup) ((Activity) context).findViewById(R.id.ll_toast));
                TextView msgTv = (TextView) layout.findViewById(R.id.tv_msg);
                msgTv.setText(message);
                Toast toast = new Toast(context);
                toast.setGravity(Gravity.FILL_HORIZONTAL | Gravity.BOTTOM, 0, 0);
                toast.setDuration(Toast.LENGTH_LONG);
                toast.setView(layout);
                toast.show();


            }

            /**
             * The toast displayed by this class will display it for long period of time
             *
             * @param message
             */
            public void showSmallCustomToast(String message) {

                LayoutInflater inflater = ((Activity) context).getLayoutInflater();
                View layout = inflater.inflate(R.layout.layout_custom_toast, (ViewGroup) ((Activity) context).findViewById(R.id.ll_toast));
                TextView msgTv = (TextView) layout.findViewById(R.id.tv_msg);
                msgTv.setText(message);
                Toast toast = new Toast(context);
                toast.setGravity(Gravity.FILL_HORIZONTAL | Gravity.BOTTOM, 0, 0);
                toast.setDuration(Toast.LENGTH_SHORT);
                toast.setView(layout);
                toast.show();
            }

        }

其他回答

 Toast toast = Toast.makeText(test.this,"bbb", Toast.LENGTH_LONG);
 toast.setGravity(Gravity.CENTER, 0, 0);
 toast.show();
Toast toast = Toast.makeText(this, "Custom toast creation", Toast.LENGTH_SHORT);
    toast.setGravity(Gravity.BOTTOM | Gravity.RIGHT,0,0);
    toast.show();

解决方案

fun Context.showToastOnTOP(message: String) = Toast.makeText(this, message, Toast.LENGTH_SHORT)
    .apply { setGravity(Gravity.TOP, 0, 0); show() }

fun Context.showToastOnBOTTOM(message: String) = Toast.makeText(this, message, Toast.LENGTH_SHORT)
    .apply { setGravity(Gravity.BOTTOM, 0, 0); show() }

重要提示:重力只有在应用程序的最大目标为29或更少时才能工作。

冷静药丸:)

如果你得到一个指示你必须调用makeText的错误,下面的代码将修复它:

Toast toast= Toast.makeText(getApplicationContext(), 
"Your string here", Toast.LENGTH_SHORT);  
toast.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
 Toast toast = Toast.makeText(test.this,"bbb", Toast.LENGTH_LONG);

 toast.setGravity(Gravity.CENTER, 0, 0);

 toast.show();

//这是对抗任何错误的最佳解决方案