通过Android编码非常新，不了解Java的观点。我已经通过发布的其他问题整理了一些内容，但我还在挣扎。 我创建了一个名为＆＃39; images2＆＃39;在我的OnCreate方法的顶部，并将一堆颜色从我的drawable中逐个放入其中。这部分工作得很好但我一直在尝试创建一个onClickListner，它有一个OnClick方法，当你点击它到另一种颜色时，它会改变drawable。我希望他们都变成相同的颜色。我知道我可以以编程方式设置选择器：gridview2.setSelector（new ColorDrawable（Color.BLACK））;但是改变选择器，无论是在后端还是XMl代码都没有帮助我让新的drawable坚持下去。所以我在适配器中创建了另一个listArray，我可以在main中调用它。我在onClick中有一个索引，它将遍历所有25个可能的项目位置，我想使它能够将drawable更改为数组中的每个位置。它还将当前位置添加到数组myarray.add（position）中;但我刚才意识到价值可能没有得到拯救。 arrayList被声明为public，但它在适配器中声明为public，因此OnCreate中的更改没有效果吗？对不起这绝对是一个noobinoob-noob问题。
/**
* Created by Jordan on 3/25/2017.
*/
public class Welcome extends AppCompatActivity implements AdapterView.OnItemClickListener {
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.welcome);
final List<Integer> images2 = new ArrayList<Integer>();
images2.add(R.drawable.grid1);images2.add(R.drawable.grid6);
images2.add(R.drawable.grid2);images2.add(R.drawable.grid2);
images2.add(R.drawable.grid3);images2.add(R.drawable.grid1);
images2.add(R.drawable.grid4);images2.add(R.drawable.grid3);
images2.add(R.drawable.grid5);images2.add(R.drawable.grid2);
images2.add(R.drawable.grid6);images2.add(R.drawable.grid6);
images2.add(R.drawable.open);images2.add(R.drawable.grid4);
images2.add(R.drawable.grid1);images2.add(R.drawable.grid1);
images2.add(R.drawable.grid6);images2.add(R.drawable.grid4);
images2.add(R.drawable.grid4);images2.add(R.drawable.grid2);
images2.add(R.drawable.grid3);images2.add(R.drawable.grid3);
images2.add(R.drawable.grid6);images2.add(R.drawable.grid1);
images2.add(R.drawable.grid5);
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
final GridView gridview2 = (GridView) findViewById(R.id.welcomeGrid);
final Welcome.ImageAdapter mAdapter = new Welcome.ImageAdapter(this, images2);
gridview2.setAdapter(mAdapter);
gridview2.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE);
gridview2.setItemChecked(2, true);
gridview2.setOnItemClickListener(this);
gridview2.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
// ArrayList<Integer> clickedStatus = new ArrayList<Integer>();
ArrayList<Integer> clickedStatus = new ArrayList<>(25);
clickedStatus.add(position);
if (position == 12){
setContentView(R.layout.login);
}
else if(position != 12) {
// no matter, whether the item has already been clicked or not I want this toast to pop up to promp the user to actually enter the app and sign in
Toast.makeText(Welcome.this, "You selected " + position+ ".. Please select middle tile to enter!",
Toast.LENGTH_SHORT).show();
if(clickedStatus.contains(position)){
// as soon as it's noticed that the an integer matching the current position is currently stored in the
// array list (clickedStatus), I want it removed right below
// was passing item in place of position into the remove(). Don't know why Integer item = (Integer) parent.getItemAtPosition(position);
//I want to go through 25 numbers and
for(int i=0; i<25;i++ ){
// compare those ints to what is in contained in the clickedstatus
if(clickedStatus.contains(i)){
// Drawable Marker = getResources().getDrawable(R.drawable.celeb1);
images2.set(i, R.drawable.celeb1);
//for every int that is stored in click status I want
// to call the item and change the background of that item to a specified drawable file.
}
}
}
else {
clickedStatus.add(position);
// images2.set(position, );
for(int i=1; i<25;i++ ){
// compare those ints to what is in contained in the clickedstatus
if(clickedStatus.contains(i)){
// Drawable Marker = getResources().getDrawable(R.drawable.celeb1);
images2.set(i, R.drawable.celeb1);
//for every int that is stored in click status I want
// to call the item and change the background of that item to a specified drawable file.
}
}
}
// gridview2.setSelector(new ColorDrawable(Color.BLACK));
// mAdapter.notifyDataSetChanged();
}
}
}
);
}
// I think this got generated automatically at some point somehow. Might of been with the multichoicemode line above ^
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
//IMAGES ARE REFERENCED HERE V---
private List<Integer> mImages2;
public ArrayList<Integer> clickedStatus = new ArrayList<Integer>();
//create array to store whether an item has been clicked or not. needs to be public!!
//check to determine the case in the below method
// IGNORE THIS
// private int selectedPosition = -1;
//public void setSelectedPosition(int position) {
// selectedPosition = position;
//}
public ImageAdapter( final Context c, final List<Integer> images2){
mContext = c;
mImages2 = images2;
}
public int getCount() {
return mImages2.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return 1;
}
// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) {
// if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(140, 120));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(0, 0, 0, 0);
} else {
imageView = (ImageView) convertView;
}
if(clickedStatus.contains(position)){
convertView.setSelected(true);
convertView.setPressed(true);
convertView.setBackgroundColor(Color.GREEN);
}
imageView.setImageResource(mImages2.get(position));
return imageView;
}
;}
}
答案 0 :(得分：0)
我创建并最终确定了一组不同的数组，用于保存每个可能导致获胜的五种选择组合。标题为对角线（1,2,3,4,5），水平（1,2,3,4,5），垂直（1,2,3,4,5）等。点击后，一个值存储在ListArray的适当位置，我有相对检查（if语句），每次单击按钮时都会循环。不会大幅减慢应用程序速度，在纸面上看起来很难看，但在没有使用复选框的情况下非常实用。如果有人有兴趣看到他们可能评论的代码。