我想将捕获的图像设置为在同一网格布局中动态创建的 ImageView ，但它创建了一个新的网格布局并将捕获的图像设置为新的 GridView 。

这是我的mainactivity.java文件

public class MainActivity extends Activity implements AdapterView.OnItemClickListener {

    GridView gridView;
    ArrayList<Damage_Item> gridArray = new ArrayList<Damage_Item>();
    CustomAdapter_back customGridAdapter;
    GridLayout mContainerView;
    int REQUEST_CAMERA = 0, SELECT_FILE = 1;
    ImageView dynamic_imageview;
    LinearLayout dynamic_linearview;
    String image1;
    ArrayList<String> arrayList_image = new ArrayList<String>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mContainerView = (GridLayout)findViewById(R.id.describedamage_gridview) ;
        //gridArray.add(new Item(homeIcon,"Home"));
        gridView = (GridView) findViewById(R.id.gridview1);

        Button add = (Button)findViewById(R.id.button1);
        add.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                inflateImageRow();
            }
        });

    }

    public void selectImage() {
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        startActivityForResult(intent, REQUEST_CAMERA);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == Activity.RESULT_OK) {
            if (requestCode == REQUEST_CAMERA)
            onCaptureImageResult(data);
        }
    }

    public void onCaptureImageResult(Intent data) {
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        Bitmap resized = Bitmap.createScaledBitmap(thumbnail, 140, 150, true);
        Bitmap dest = Bitmap.createBitmap(resized.getWidth(), resized.getHeight(), Bitmap.Config.ARGB_8888);

        ByteArrayOutputStream byteArrayOutputStream1 = new ByteArrayOutputStream();
        dest.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream1);

        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy HH:mm:ss");
        String dateTime = sdf.format(Calendar.getInstance().getTime()); // reading local time in the system


        Canvas canvas = new Canvas(dest); //bmp is the bitmap to dwaw into
        Paint paint = new Paint();
        canvas.drawBitmap(resized, 0f, 0f, null);
        paint.setColor(Color.BLACK);
        canvas.drawRect(1, 145, 100, 130, paint);
        paint.setColor(getResources().getColor(R.color.orange));
        paint.setTextSize(10);
        paint.setFakeBoldText(true);

        paint.setTextAlign(Paint.Align.LEFT);
        float height = paint.measureText("yY");
        canvas.drawText(dateTime, 5f, height+130f, paint);

        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        dest.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
        byte[] byteArray = byteArrayOutputStream.toByteArray();
        String image1 = Base64.encodeToString(byteArray, Base64.DEFAULT);

        //arrayList_image.add(image1);
        BitmapDrawable background = new BitmapDrawable(dest);
        //holder.imageItem.setBackground(background);
        Damage_Item damage_item = new Damage_Item();
        damage_item.setTemp_image(dest);
        gridArray.add(damage_item);

        customGridAdapter = new CustomAdapter_back(MainActivity.this, gridArray);
        gridView.setAdapter(customGridAdapter);


        /*gridView.setAdapter(customGridAdapter);

        gridView.setOnItemClickListener(MainActivity.this)*/;



    }
    int count;
    private void inflateImageRow() {

        LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        final View rowView = inflater.inflate(R.layout.dynamic_row, null);
        dynamic_imageview = (ImageButton)rowView.findViewById(R.id.dynamic_imageview);

        dynamic_linearview=(LinearLayout)rowView.findViewById(R.id.dynamic_linear);

            dynamic_imageview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                //image_flagdynamic_right = true;
                 selectImage();
            }
        });
        count= mContainerView.getChildCount()-1;
        dynamic_imageview.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(final View v) {
            int parent=((View) v.getParent()).getId();
            AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                builder.setTitle("Whould you like to delete this image?");
                builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        int index = ((View) v.getParent()).getId() + 2;

                        try {
                            mContainerView.removeView((View) v.getParent());
                            // arrayList_image.remove(((View) v.getParent()).getId());
                        } catch (IndexOutOfBoundsException e) {
                            e.printStackTrace();
                        }
                        Toast.makeText(getApplicationContext(), "delete", Toast.LENGTH_LONG).show();
                    }
                });
                builder.setNegativeButton("No",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                dialog.cancel();
                            }
                        });
                AlertDialog alert = builder.create();
                alert.show();

                return false;
            }
        });

        mContainerView.addView(rowView, mContainerView.getChildCount() - 1);
    }

    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {

    }
}

这是我的适配器文件 CustomAdapter_back.java

public class CustomAdapter_back extends BaseAdapter {

    private Context context;
    private ArrayList<Damage_Item> Damage_Item;
    LayoutInflater inflater;
    ImageView button;

    public CustomAdapter_back(Context context, ArrayList<Damage_Item> Damage_Item) {
        this.context = context;
        this.Damage_Item = Damage_Item;
        inflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public int getCount() {
        return Damage_Item.size();
    }

    @Override
    public Object getItem(int position) {
        return Damage_Item.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }
    public View getView(final int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            convertView = inflater.inflate(R.layout.row_grid, null);
            button = (ImageView) convertView.findViewById(R.id.imageview);
        }
        else
        {
        }

        button.setImageBitmap(Damage_Item.get(position).getTemp_image());

        return convertView;
    }
}

我的activity_manin.xml文件

<Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="26dp"
        android:padding="11dp"
        android:text="Add" />
<GridLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/describedamage_gridview"
    android:columnCount="2"
    android:layout_below="@+id/button1"
    android:rowCount="1"
    android:orientation="horizontal">

    <GridView
        android:id="@+id/gridview1"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:columnWidth="90dp"
        android:numColumns="2"
        android:verticalSpacing="10dp"
        android:horizontalSpacing="10dp"
        android:stretchMode="columnWidth"
        android:gravity="center"
        />
</GridLayout>

row_grid.xml

   <?xml version="1.0" encoding="utf-8"?>
   <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:padding="5dp" >

   <ImageView
        android:id="@+id/imageview"
        android:layout_width="170dp"
        android:layout_height="150dp"
        android:background="@drawable/camera" />

   </LinearLayout>

最佳答案

首先，您似乎没有在 CustomAdapter_back 中使用 holder 模式，因为 Fllo 注意到您不需要手动删除 View 。 将此功能添加到您的适配器

public void setData(ArrayList<Damage_Item> data)
{
     this.Damage_Item = Damage_Item;
     notifyDataSetChanged();
}

并从对话框中调用这个函数

 AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
            builder.setTitle("Whould you like to delete this image?");
            builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                     //get deleted item index according to your logic
                     int index = ((View) v.getParent()).getId() + 2;
                     gridArray.remove(index);
                     customGridAdapter.setData(gridArray);
                    Toast.makeText(getApplicationContext(), "delete", Toast.LENGTH_LONG).show();
                }
            });

关于android - 在 gridlayout 中动态创建的 ImageView 不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37088968/