public void generate(View view) {
Bitmap qrBitmap = generateBitmap(Math.random(),400, 400);
iv.setImageBitmap(qrBitmap);
}
<ImageView
android:id="@+id/iv"
android:layout_width="256dp"
android:layout_height="256dp"
android:layout_centerInParent="true"/>https://blog.csdn.net/u012702547/article/details/51501350#t1http://
我照着这个博客里面的写了一下二维码生成,但是最后出现iv 报错 cannot resolve symbol
Bitmap qrBitmap = generateBitmap(Math.random(),400, 400);
iv.setImageBitmap(qrBitmap);
}
<ImageView
android:id="@+id/iv"
android:layout_width="256dp"
android:layout_height="256dp"
android:layout_centerInParent="true"/>https://blog.csdn.net/u012702547/article/details/51501350#t1http://
我照着这个博客里面的写了一下二维码生成,但是最后出现iv 报错 cannot resolve symbol
ImageView iv;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(....)
iv = (ImageView)findViewById(R.id.iv);
}
……
}
ImageView iv = (ImageView)findViewById(R.id.iv);