我想创建自定义 Toast 视图,例如
public class SMSToast extends Activity {
public void showToast(Context context, String message) {
LayoutInflater inflater = getLayoutInflater();
View layout = inflater.inflate(R.layout.toast_sms, (ViewGroup)findViewById(R.id.toast_sms_root));
TextView text = (TextView) layout.findViewById(R.id.toast_sms_text);
text.setText(message);
Toast toast = new Toast(context);
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
}
}
和在广播接收器上接收方法中
SMSToast toast = new SMSToast();
toast.showToast(context,
"Received SMS from: " + msg_from +
" Content: " + msgBody);
但在调用代码时不显示任何消息。如果我使用 Toast,则会显示文本。我做错了什么?
public class SMSToast{
public void showToast(Context context, String message) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.toast_sms, null);
TextView text = (TextView) layout.findViewById(R.id.toast_sms_text);
text.setText(message);
Toast toast = new Toast(context);
toast.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
toast.setDuration(Toast.LENGTH_LONG);
toast.setView(layout);
toast.show();
}
}
不要从活动扩展 SMSToast 类。 使其成为一个简单的 Java 类。
SMSToast toast = new SMSToast();
toast.showToast(context, "Received SMS from: " + msg_from +
" Content: " + msgBody);
请更改这两行
View layout = inflater.inflate(R.layout.toast_sms, null);
and
Toast toast = new Toast(getApplicationContext());
你看到示例表单文档了吗?
看起来不是。
您不需要扩展活动!只需使用膨胀和标准Toast,以及setView API。
使用以下代码:
LayoutInflater mInflater=LayoutInflater.from(context);
View view=mInflater.inflate(R.layout.your_layout_file,null);
Toast toast=new Toast(context);
toast.setView(view);
toast.setDuration(TOAST.LENGTH_LONG);
toast.show();