我正在android中构建一个简单的洪水游戏，我正在努力使gridview或者更确切地说“ImageAdapterGridView”在点击时更新图像。当用户点击一个单元格时，游戏会记录单元格的颜色并使左上角的单元格颜色相同。问题是我无法重绘网格。我在网上找到的所有解决方案似乎都以不同的方式填充网格。
public class GameActivity extends AppCompatActivity {
public int clickedCell;
public String colour = "error";
public int[] numbers = new int[64];
public Context mContext;
public GridView androidGridView;
public Integer[] imageIDs = {
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
R.drawable.blue, R.drawable.orange, R.drawable.pink, R.drawable.purple, R.drawable.red, R.drawable.yellow, R.drawable.blue, R.drawable.orange,
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
Random random= new Random();
for(int i = 0; i < numbers.length; i++) {
int number= random.nextInt(6);
numbers[i]= number;
}
for(int i =0; i < numbers.length; i++) {
if(numbers[i]==0) {
imageIDs[i] = R.drawable.blue;
}
else if(numbers[i]==1) {
imageIDs[i] = R.drawable.orange;
}
else if(numbers[i]==2) {
imageIDs[i] = R.drawable.pink;
}
else if(numbers[i]==3) {
imageIDs[i] = R.drawable.purple;
}
else if(numbers[i]==4) {
imageIDs[i] = R.drawable.red;
}
else if(numbers[i]==5) {
imageIDs[i] = R.drawable.yellow;
}
}
androidGridView = (GridView) findViewById(R.id.gridview_android_example);
androidGridView.setAdapter(new ImageAdapterGridView(this));
androidGridView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent,
View v, int position, long id) {
ImageAdapterGridView IAGV = new ImageAdapterGridView(mContext);
clickedCell = position;
if(numbers[clickedCell]==0) {
imageIDs[0] = R.drawable.blue;
colour = "blue";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
else if(numbers[clickedCell]==1) {
imageIDs[0] = R.drawable.orange;
colour = "orange";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
else if(numbers[clickedCell]==2) {
imageIDs[0] = R.drawable.pink;
colour = "pink";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
else if(numbers[clickedCell]==3) {
imageIDs[0] = R.drawable.purple;
colour = "purple";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
else if(numbers[clickedCell]==4) {
imageIDs[0] = R.drawable.red;
colour = "red";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
else if(numbers[clickedCell]==5) {
imageIDs[0] = R.drawable.yellow;
colour = "yellow";
Toast.makeText(getBaseContext(), "Tile " + (position + 1) + " Selected. It is " + colour, Toast.LENGTH_SHORT).show();
IAGV.getView(0, null, parent);
}
}
});
}
public class ImageAdapterGridView extends BaseAdapter {
public ImageAdapterGridView(Context c) {
mContext = c;
}
public int getCount() {
return imageIDs.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView mImageView;
if (convertView == null) {
mImageView = new ImageView(mContext);
mImageView.setLayoutParams(new GridView.LayoutParams(130, 130));
mImageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
mImageView.setPadding(1, 4, 1, 4);
} else {
mImageView = (ImageView) convertView;
}
mImageView.setImageResource(imageIDs[position]);
return mImageView;
}
}
}
这是我的主要课程。目前我正在尝试重新调用getView（）类，希望这将重新绘制图像，但我不知道这是否可行。如果需要任何其他信息，请告诉我。
非常感谢。
将适配器提取到变量中：
//// extract adapter into a variable instead of creating inline
// androidGridView.setAdapter(new ImageAdapterGridView(this));
ImageAdapterGridView adapter = new ImageAdapterGridView(this);
androidGridView.setAdapter(adapter);
然后你可以调用.notifyDataSetChanged刷新你的onclick里面的视图：
adapter.notifyDataSetChanged();
您可以在onClick方法的底部执行一次。
您还在Click处理程序中创建了第二个适配器：
ImageAdapterGridView IAGV = new ImageAdapterGridView(mContext);
这是完全创建一个新的适配器，所以你会有两个适配器，但一个没有连接到视图。
另一个小问题是它的名称有点令人困惑，因为它是一个适配器但命名为它是一个视图。我可能会把它命名为ImageGridViewAdapter。