如何从CardView内部的TextView获取文本？

Question

Inside a CardView I have a LinearLayout with three TextViews in it and I want to get the text from these TextViews. My XML-file looks like this:

 <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>

Then I want to iterate through all CardViews in the parent LinearLayout and get the TextViews. Something like this:

     for (int i = 0; i < defense.getChildCount(); i++){
        String getName = ((CardView)defense.getChildAt(i)).getText().toString();
        id[i] = getName;
    }

But I'm not able to call the methods getText().toString(); like this. How can I get the text from these TextViews inside the CardView?

Answer 1

So many options in here.
1. Give id for your TextViews
2. Use for in LinearLayout with id innerLayout
3. When your UI is dynamic and you need to get TextViews from defense

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;
        }
    }

Answer 2

Just give the reference to TextView

    for (int i = 0; i < defense.getChildCount(); i++){
        String getName = ((TextView)defense.getChildAt(i)).getText().toString();
        id[i] = getName;
    }

Answer 3

It not works because the textview is inside another ViewGroup which is @+id/innerLayout..

i make a simple function for you..

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);
    }
}

and you can use it like this..

    LinearLayout def = (LinearLayout) findViewById(R.id.defense);
    loopViews(def);

hope it can help you.. :)