我遇到错误


“由:java.lang.ClassCastException:
androidx.gridlayout.widget.GridLayout无法转换为
android.widget.GridLayout”,在mainActivity.java中


 GridLayout mygridLayout = findViewById(R.id.gridLayout);

 for(int i=0; i<mygridLayout.getChildCount(); i++)
 {
     ((ImageView) mygridLayout.getChildAt(i)).setImageResource(0);
 }

最佳答案

在代码中使用它会起作用。

androidx.gridlayout.widget.GridLayout mygridLayout = findViewById(R.id.gridLayout);

for(int i=0; i<mygridLayout.getChildCount(); i++){
 ((ImageView) mygridLayout.getChildAt(i)).setImageResource(0);
}

08-18 17:29