在CardView
内,我有一个LinearLayout
,其中有三个TextViews
,我想从这些TextView中获取文字。我的XML文件如下所示:
<LinearLayout
android:id="@+id/defense"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal"
>
<android.support.v7.widget.CardView
android:id="@+id/cardCB"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_weight="1"
app:cardBackgroundColor="@android:color/transparent"
app:cardElevation="0dp">
<LinearLayout
android:id="@+id/innerLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Rannochia"
android:textAlignment="center"
android:textStyle="bold"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="78"
android:textAlignment="center"
android:textStyle="bold"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="CB"
android:textAlignment="center"
android:textStyle="bold"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
然后我想迭代通过父LinearLayout中的所有CardView并获取TextViews。像这样:
for (int i = 0; i < defense.getChildCount(); i++){
String getName = ((CardView)defense.getChildAt(i)).getText().toString();
id[i] = getName;
}
但是我无法像这样调用方法getText().toString();
。如何从CardView中的这些TextView中获取文本?
答案 0 :(得分:1)
这里有很多选择。
1。为TextViews提供id
2。使用ID为for
的LinearLayout中的innerLayout
3。当你的UI是动态的,你需要从防御中获取TextViews
for (int i = 0; i < defense.getChildCount(); i++){
CardView card = defense.getChildAt(i);
ViewGroup viewGroup = ((ViewGroup)card.getChildAt(0));
for(int j=0;j<viewGroup.getChildCount();j++){
String getName = ((TextView)viewGroup.getChildAt(j)).getText().toString();
id[i] = getName;
}
}
答案 1 :(得分:0)
只需提供TextView
的引用 for (int i = 0; i < defense.getChildCount(); i++){
String getName = ((TextView)defense.getChildAt(i)).getText().toString();
id[i] = getName;
}
答案 2 :(得分:0)
它不起作用,因为textview位于另一个ViewGroup,它是@ + id / innerLayout ..
我为你做了一个简单的功能..
func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool
{
if (string == " " || string == " ") && range.location == 0
{
return false
}
return true
}
你可以像这样使用..
private void loopViews(ViewGroup view) {
for (int i = 0; i < view.getChildCount(); i++) {
View v = view.getChildAt(i);
if (v instanceof EditText) {
// will be executed when its edittext
Log.d("Check", "This is EditText");
} else if (v instanceof TextView) {
// will be executed when its textview,, and get the text..
TextView x = (TextView) v;
String aa = x.getText().toString();
Log.d("Check", "This is TextView with text : " +aa);
} else if (v instanceof ViewGroup) {
// will be executed when its viewgroup,, and loop it for get the child view..
Log.d("Check", "This is ViewGroup");
this.loopViews((ViewGroup) v);
}
}
希望它可以帮助你.. :)