android toast居中显示_如何在Android中更改Toast的位置？

如何在Android中更改Toast的位置？

当我使用Toast在屏幕上显示一些弹出文本时，它会在屏幕底部稍上方显示文本，这是默认位置。

现在我想根据我的选择在屏幕中间或某处显示它。

谁能指导我如何实现这一目标？

UMAR asked 2019-02-20T14:13:36Z

8个解决方案

362 votes

从文档中，

定位你的吐司

标准吐司通知出现在屏幕底部附近，   水平居中。 你可以改变这个位置   toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);方法。 这接受三个参数：a   Gravity常数，偏移量为x-position，偏移量为y-position。

例如，如果您确定吐司应该出现在   左上角，您可以像这样设置重力：

toast.setGravity(Gravity.TOP|Gravity.LEFT, 0, 0);

如果要将位置微移到右侧，请增加值   第二个参数。 要轻推它，增加最后一个的值   参数。

Pentium10 answered 2019-02-20T14:14:39Z

126 votes

顺便说一句，如果您收到错误消息，表明您必须调用makeText，则以下代码使其工作：

Toast toast= Toast.makeText(getApplicationContext(),

"Your string here", Toast.LENGTH_SHORT);

toast.setGravity(Gravity.TOP|Gravity.CENTER_HORIZONTAL, 0, 0);

toast.show();

Rymnel answered 2019-02-20T14:15:08Z

12 votes

您可以使用以下方法自定义Toast的位置：

setGravity(int gravity, int xOffset, int yOffset)

文档

这使您可以非常具体地了解Toast的位置。

关于xOffset和yOffset参数最有用的一点是，您可以使用它们相对于某个视图放置Toast。

例如，如果要创建一个显示在Button顶部的自定义Toast，您可以创建如下函数：

// v is the Button view that you want the Toast to appear above

// and messageId is the id of your string resource for the message

private void displayToastAboveButton(View v, int messageId)

{

int xOffset = 0;

int yOffset = 0;

Rect gvr = new Rect();

View parent = (View) v.getParent();

int parentHeight = parent.getHeight();

if (v.getGlobalVisibleRect(gvr))

{

View root = v.getRootView();

int halfWidth = root.getRight() / 2;

int halfHeight = root.getBottom() / 2;

int parentCenterX = ((gvr.right - gvr.left) / 2) + gvr.left;

int parentCenterY = ((gvr.bottom - gvr.top) / 2) + gvr.top;

if (parentCenterY <= halfHeight)

{

yOffset = -(halfHeight - parentCenterY) - parentHeight;

}

else

{

yOffset = (parentCenterY - halfHeight) - parentHeight;

}

if (parentCenterX < halfWidth)

{

xOffset = -(halfWidth - parentCenterX);

}

if (parentCenterX >= halfWidth)

{

xOffset = parentCenterX - halfWidth;

}

}

Toast toast = Toast.makeText(getActivity(), messageId, Toast.LENGTH_SHORT);

toast.setGravity(Gravity.CENTER, xOffset, yOffset);

toast.show();

}

JDJ answered 2019-02-20T14:16:27Z

6 votes

Toast mytoast= Toast.makeText(getApplicationContext(), "Toast Message", 1);

mytoast.setGravity(Gravity.CENTER_HORIZONTAL, 0, 0); // for center horizontal

//mytoast.setGravity(Gravity.CENTER_VERTICAL); // for center vertical

//mytoast.setGravity(Gravity.TOP); // for top

mytoast.show();

以上代码将帮助您在屏幕中间显示吐司或根据您的选择，根据您的需要设置吐司重力

注意：对于此过程，您必须使用Toast对象

user3652986 answered 2019-02-20T14:17:00Z

6 votes

Toast toast = Toast.makeText(test.this,"bbb", Toast.LENGTH_LONG);

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

toast.show();

nzala answered 2019-02-20T14:17:20Z

2 votes

改变吐司的颜色，位置和背景颜色的方法是：

Toast toast=Toast.makeText(getApplicationContext(),"This is advanced toast",Toast.LENGTH_LONG);

toast.setGravity(Gravity.BOTTOM | Gravity.RIGHT,0,0);

View view=toast.getView();

TextView view1=(TextView)view.findViewById(android.R.id.message);

view1.setTextColor(Color.YELLOW);

view.setBackgroundResource(R.color.colorPrimary);

toast.show();

逐行说明：[https://www.youtube.com/watch?v=5bzhGd1HZOc]

Mithun Adhikari answered 2019-02-20T14:18:39Z

1 votes

在topin屏幕上设置吐司

toast.setView(view);

toast.setGravity(Gravity.BOTTOM , 0, 0); // here i am setting toast at bottom

toast.setDuration(Toast.LENGTH_LONG);

toast.show();

现在在底部

toast.setView(view);

toast.setGravity(Gravity.BOTTOM , 0, 0); // here i am setting toast at bottom

toast.setDuration(Toast.LENGTH_LONG);

toast.show();

我们可以在左，右和中心设置烤面包

点击这里

Abhishek answered 2019-02-20T14:19:56Z

0 votes

//自定义Toast类，您可以根据需要显示自定义或默认吐司)

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();

}

}

Amardeep answered 2019-02-20T14:20:36Z