我想将捕获的图像设置为在同一gridlayout中动态创建的imageview，但它会创建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>
答案 0 :(得分：0)
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视图。 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();
}
并从对话框中调用此函数
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();
}
});
答案 1 :(得分：0)
在activityResult中你有两行代码：
customGridAdapter = new CustomAdapter_back(MainActivity.this, gridArray);
gridView.setAdapter(customGridAdapter);
所以每次添加新图像时都会重新创建适配器。
使用空列表将适配器声明移动到onCreate。 添加方法
public void addItem(Damage_Item item){
this.Damage_Item.add(item);
this.notifyDataSetChange();
}
到适配器并触发它而不是创建适配器并在onCaptureImageResult中设置new。
为了上帝的缘故，命名约定。您的代码无法阅读
答案 2 :(得分：0)
试试这个
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();
}
});
customGridAdapter = new CustomAdapter_back(MainActivity.this, gridArray);
gridView.setAdapter(customGridAdapter);
}
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.notifyDataSetChanged();
/*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) {
}
}
答案 3 :(得分：0)
尝试通过删除GridView来更改xml，因为gridlayout应自动更改图像的大小。 另一个不推荐的解决方案是使用屏幕尺寸来调整图像大小