我计划制作网格基础应用程序,其中网格数量将根据用户的点击而改变。网格模式: - 2 * 2,4 * 4 ... [比如,用户将点击正确的网格,然后网格数量将增加]。我能够制作网格,但它不适合布局。那么,如何更改用户点击的网格数量以及如何动态设置网格大小。
这里我附上了我想要实现的图像。
当用户点击 不同的颜色网格时,网格数量会增加,如第二张图片。
图片:1
图片:2
用户点击后网格数量增加。
答案 0 :(得分:6)
最后我回答了我的问题:
这里需要将SquareImageView用于imageview并以编程方式设置gridview列,现在看下面的代码:
<强> SquareImageView.java 强>
public class SquareImageView extends ImageView {
public SquareImageView(Context context) {
super(context);
}
public SquareImageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public SquareImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
setMeasuredDimension(getMeasuredWidth(), getMeasuredWidth()); // Snap to
// width
}
}
为视图充气器创建Custome适配器,
<强> layout.xml 强>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<com.example.SquareImageView
android:id="@+id/image_grid"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</com.example.SquareImageView>
</LinearLayout>
<强> MainActivity.java 强>
public class MainActivity extends Activity implements OnClickListener {
int counter = 1;
CustomGrid adapter;
static int colum = 2;
public static GridView gridview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
adapter = new CustomGrid(MainActivity.this);
gridview = (GridView) findViewById(R.id.gridview);
gridview.setNumColumns(2);
gridview.setAdapter(adapter);
}
public class CustomGrid extends BaseAdapter {
private Context mContext;
CustomGrid adgg;
int mNumColumns = 2;
private Random rand = new Random();
GridView gg;
int color = Color.argb(255, rand.nextInt(256), rand.nextInt(256), rand.nextInt(256));
float alfa = 0.1f;
int rand_ind = rand.nextInt((2 * 2) - 0) + 0;
public CustomGrid(Context c) {
mContext = c;
// this.Imageid = Imageid;
// this.web = web;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mNumColumns * mNumColumns;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View gridView;
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View grid = new View(mContext);
grid = inflater.inflate(R.layout.layout, null);
final View imageView = (ImageView) grid.findViewById(R.id.image_grid);
if (convertView == null) {
if (position == rand_ind) {
imageView.setBackgroundColor(getColorWithAlpha(color, alfa));
} else {
imageView.setBackgroundColor(color);
}
} else {
grid = (View) convertView;
}
grid.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (position == rand_ind) {
// Correct postion click time if condition occur..........
if (counter == 2) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.1f;
} else if (counter == 6) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.08f;
} else if (counter == 8) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.1f;
} else if (counter == 12) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.1f;
} else if (counter == 14) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.1f;
} else if (counter == 16) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.1f;
} else if (counter == 18) {
mNumColumns = mNumColumns + 1;
alfa = alfa + 0.05f;
} else if (counter >= 18) {
// mNumColumns = mNumColumns + 1;
alfa = 0.8f;
}
gridview.setNumColumns(mNumColumns);
gridview.setAdapter(adapter);
adapter.notifyDataSetChanged();
rand_ind = rand.nextInt((mNumColumns * mNumColumns) - 0) + 0;
} else {
// Here code for nagative click............ whem click
// nagative at time geanarate this code.........
}
}
});
return grid;
}
public int getColorWithAlpha(int color, float ratio) {
int newColor = 0;
int alpha = Math.round(Color.alpha(color) * ratio);
int r = Color.red(color);
int g = Color.green(color);
int b = Color.blue(color);
newColor = Color.argb(alpha, r, g, b);
return newColor;
}
}
@Override
public void onClick(View v) {
}
}
我希望这个答案对任何人都有帮助。