平時通常只用默認的Toast,使用Toast.makeTest()方法調用,默認的風格是白字半透明灰框,常常與app的主題顏色不符,因此須要自定義Toast.效果圖:html
顯示定義須要的佈局文件:layout/custom_toast.xmljava
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/custom_toast_container" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent" android:padding="8dp" android:background="#DAAA" > <ImageView android:src="@drawable/droid" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginRight="8dp" /> <TextView android:id="@+id/text" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#FFF" /> </LinearLayout>
注意root view 的I必須設置id(接下來代碼用到,此時爲custom_toast_container)android
接下來是kotlin代碼(根據android官網,手動將Java代碼改成Kotliin代碼)安全
class ToastActivity:AppCompatActivity(){ override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) var layoutInflater:LayoutInflater = layoutInflater //這裏須要一個安全類型轉換as?, 否則編譯沒法經過,由於ViewGroup是not null類型, //而findViewById(R.id.custom_toast_container)可能爲null,因此不能直接用as var layout: View = layoutInflater.inflate(R.layout .custom_toast, findViewById(R.id.custom_toast_container) as? ViewGroup) val text:TextView = layout.findViewById(R.id.text) as TextView text.setText("This is a custom toast") //這個若是是java語法,則須要調用getApplicationContext, val toast = Toast(applicationContext) toast.setGravity(Gravity.CENTER_VERTICAL, 0, 300)//設置位置 toast.duration = Toast.LENGTH_LONG toast.view = layout//java:toast.setView(layout); toast.show() } }
代碼都是官方文檔拿過來的,裏面是Java代碼:
https://developer.android.com...app