我看到 Android 發布了Oreo一個新屬性textView：android:autoSizeTextType這會textView根據它顯示的文本字符串調整布局。我怎樣才能將它與 a 一起使用textSwitcher？
3 回答
小怪獸愛吃肉
TA貢獻1852條經驗 獲得超1個贊
我不知道上面的那些，但這是一個編碼最少的解決方案。您可以更改主布局高度以查看自動調整大小，或者您可以點擊上部切換器。一個很酷的功能是第二個文本字段的樣式在點擊時會延續（即文本是白色的）。
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
}
fun switchText(v: View) {
(v as? TextSwitcher)?.let{
it.tag = (((it.tag as? Int) ?: 0) + 1) % it.childCount
it.setText((it.children.toList()[it.tag as Int] as TextView).text)
}
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="350dp"
tools:context=".MainActivity">
<TextSwitcher
android:id="@+id/a"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@color/purple_200"
app:layout_constraintBottom_toTopOf="@id/b"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="spread"
android:onClick="switchText"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp">
<TextView
android:id="@+id/a1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="999 / 999"
android:gravity="center"
android:letterSpacing="-0.05"
app:autoSizeMaxTextSize="936sp"
app:autoSizeMinTextSize="28sp"
app:autoSizeTextType="uniform"
android:lines="1"
android:includeFontPadding="false" />
<TextView
android:id="@+id/a2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="1000000 / 10000000"
android:textColor="@color/white"
android:gravity="center"
android:letterSpacing="-0.05"
app:autoSizeMaxTextSize="136sp"
app:autoSizeMinTextSize="28sp"
app:autoSizeTextType="uniform"
android:lines="1"
android:includeFontPadding="false" />
</TextSwitcher>
<TextSwitcher
android:id="@+id/b"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@color/teal_200"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/a"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintVertical_chainStyle="spread"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp">
<TextView
android:id="@+id/b1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="999 / 999"
android:gravity="center"
android:letterSpacing="-0.05"
app:autoSizeMaxTextSize="136sp"
app:autoSizeMinTextSize="28sp"
app:autoSizeTextType="uniform"
android:lines="1"
android:includeFontPadding="false" />
</TextSwitcher>
</androidx.constraintlayout.widget.ConstraintLayout>
絕地無雙
TA貢獻1946條經驗 獲得超4個贊
<?xml version="1.0" encoding="utf-8"?>
<TextView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello" />
private ViewFactory viewFactory = new ViewFactory() {
public View makeView() {
LayoutInflater inflater = LayoutInflater.from(TextSwitcherTest.this);
TextView textView = (TextView) inflater.inflate(R.layout.textView, null);
return textView;
}
};
慕姐4208626
TA貢獻1852條經驗 獲得超7個贊
altitudeSwitcher = (TextSwitcher) findViewById(R.id.altitude);
altitudeSwitcher.setFactory(new ViewFactory() {
@Override
public View makeView() {
TextView t = new TextView(getApplicationContext());
t.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL);
t.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 50);
return t;
}
});
添加回答
舉報
0/150
提交
取消