从画廊图像的选择之后没有显示在GridView控件设置(after selection of ima

我试图从库中选择图像，并试图在GridView控件来显示它，但它不是在GridView的设置，下面是我的代码段，谁能告诉我什么是我的代码的问题？提前致谢

public class MainActivity extends Activity {

private static int RESULT_LOAD_IMAGE = 1;
private ImageView imageView;
private Uri selectedImage;
private int columnIndex;
private GridView gridView;
private String picturePath;
private ImageView imageView11;


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

    Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
    gridView = (GridView) findViewById(R.id.gridview);
    gridView.setAdapter(new ImageAdapter(this));

    gridView.setOnItemClickListener(new OnItemClickListener() 
    {
        public void onItemClick(AdapterView<?> parent, 
        View v, int position, long id) 
        {                
            Toast.makeText(getBaseContext(), 
                    "pic" + (position + 1) + " selected", 
                    Toast.LENGTH_SHORT).show();
        }
    });        
    buttonLoadImage.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
            intent.setType("image/*");
            startActivityForResult(intent, 1);
        }
    });
}


@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        selectedImage = data.getData();
        String[] filePathColumn = { MediaStore.Images.Media.DATA };

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();



        imageView = (ImageView) findViewById(R.id.imgView);
        imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));

        columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        objImageAdapter.addToList(picturePath);
        cursor.close();


    }


}

    public class ImageAdapter extends BaseAdapter 
  {
private Context context;
ArrayList<String> arrayList;

public ImageAdapter(Context c) 
{
    context = c;
}

//---returns the number of images---
public int getCount() {
    return arrayList.size();
}

//---returns the ID of an item--- 
public Object getItem(int position) {
    return position;
}

void addToList(String strPath)
{
    this.arrayList.add(strPath);
    this.notifyDataSetChanged();
}
public long getItemId(int position) {
    return position;
}

//In this array you have to store all images path which is you want to display in baseapater and must be global to access in baseapater  

public View getView(int position, View convertView, ViewGroup parent) 
{
    ImageView imageView;
    if (convertView == null) {
        imageView = new ImageView(context);
        imageView.setLayoutParams(new GridView.LayoutParams(185, 185));
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imageView.setPadding(5, 5, 5, 5);
    } else {
        imageView = (ImageView) convertView;
    }
    String path = arrayList.get(position);
    Bitmap myBitmap = BitmapFactory.decodeFile(path);
    imageView.setImageBitmap(myBitmap);
    return imageView;
}

}

activity_main.xml中

    <?xml version="1.0" encoding="utf-8"?>
  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
       android:layout_width="fill_parent"
      android:layout_height="fill_parent">

         <GridView 
      android:id="@+id/gridview"
        android:layout_width="wrap_content" 
         android:layout_height="wrap_content"
       android:columnWidth="90dp"
          android:numColumns="auto_fit"
        android:verticalSpacing="10dp"
       android:horizontalSpacing="10dp"
         android:stretchMode="columnWidth"
          android:gravity="center"
         />
     <ImageView
    android:id="@+id/imgView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1"></ImageView>
<Button
    android:id="@+id/buttonLoadPicture"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="0"
    android:text="Load Picture"
    android:layout_gravity="center"></Button>
  </LinearLayout>

Answer 1:

我试图从库中选择图像，并试图在GridView控件来显示它，但它不是在GridView的设置

做下面的ImageAdapter类的变化：

1.返回大小arrayList从getCount方法：

public int getCount() {
    return arrayList.size();
}

2.创建用于当前适配器数据源添加新选择的图像的方法：

void addToList(String strPath)
{
    this.arrayList.add(strPath);
    this.notifyDataSetChanged();
}

现在，在onActivityResult通话addToList方法在GridView中显示选定的图像：

columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
objImageAdapter.addToList(picturePath);
cursor.close();

Answer 2:

你是如何设置imageView.setImageResource（位置），在SetImageResource如果设置比它的，因为它是在调整量只有细胞指数是商店像0,1,2不能显示图像的GridView单元位置。你需要设置你的位图或在你的Baseadapter getView方法资源“现在的位置”的ID乱伦。

Answer 3:

首先，你储存所有的画廊图片路径在全球ArrayList和比后给getView方法的位置阵列，并且获得特定适配器电池单路径只是不喜欢它belove代码

ArrayList<String> arrayList; //In this array you have to store all images path which is you want to display in baseapater and must be global to access in baseapater  

public View getView(int position, View convertView, ViewGroup parent) 
{
    ImageView imageView;
    if (convertView == null) {
        imageView = new ImageView(context);
        imageView.setLayoutParams(new GridView.LayoutParams(185, 185));
        imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
        imageView.setPadding(5, 5, 5, 5);
    } else {
        imageView = (ImageView) convertView;
    }
    String path = arrayList.get(position);
    Bitmap myBitmap = BitmapFactory.decodeFile(path);
    imageView.setImageBitmap(myBitmap);
    return imageView;
}