使用 setImageURI 设置 Uri 时出现 OutOfMemoryError

Question

用户select一张图片，图片的路径然后存储在我的SQLite数据库中。然后我使用 CursorAdapter:

在 GridView 中从 SQLite 填充 text/images

public class MyNiftyAdapter extends CursorAdapter{
private LayoutInflater mInflater;
private Cursor cur;

public MyNiftyAdapter(Context context, Cursor c) {
    super(context,c);
    this.mInflater = LayoutInflater.from(context);
    this.cur = c;
}
public MyNiftyAdapter(Context context, Cursor c, boolean autoRequery)
{
    super(context, c, autoRequery);
    this.mInflater = LayoutInflater.from(context);
    this.cur = c;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    ViewHolder viewHolder;
    if(convertView == null)
    {
        convertView = this.mInflater.inflate(R.layout.single_item, null);
        viewHolder = new ViewHolder();
        viewHolder.name = (TextView)convertView.findViewById(R.id.txtName);
        viewHolder.Age = (TextView)convertView.findViewById(R.id.studentage);
        viewHolder.Id = (TextView)convertView.findViewById(R.id.rowid);
        viewHolder.Image = (CircularImageView)convertView.findViewById(R.id.imgFood);
        convertView.setTag(viewHolder);
    }else
    {
        viewHolder = (ViewHolder)convertView.getTag();
    }
    this.cur.moveToPosition(position);

    viewHolder.name.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper.NAME)));
    viewHolder.Age.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper.AGE)));
    viewHolder.Id.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper._ID)));
    Uri jg = Uri.parse(this.cur.getString(this.cur.getColumnIndex("imagepath")));
    viewHolder.Image.setImageURI(jg);

    return convertView;
}

@Override
public void bindView(View view, Context context, Cursor cursor) {

}

@Override
public View newView(Context context, Cursor cursor, ViewGroup parent) {
    // Dont need to do anything here
    return null;
}

static class ViewHolder
{
    TextView name;
    TextView Age;
    TextView Id;
    CircularImageView Image;
}
}

当我 select 大图像时，出现内存不足错误：

java.lang.OutOfMemoryError: Failed to allocate a 21566748 byte allocation with 8448604 free bytes and 8MB until OOM

我看到位图应该按比例缩小，但我只是使用文件的 Uri 并显示它。有没有办法避免这个问题，因为我不想将另一个（压缩的）文件保存到设备？

我已经在清单中尝试 android:hardwareAccelerated="false"。

这对我有用：

我最终使用 picasso 作为建议的答案，但需要注意的重要一点是，当从设备加载 URI 时，加载URI 像这样：

Picasso.with(mContext) .load(new File(String.valueOf(Uri))) .placeholder(R.drawable.profile) .resize(800, 800) .centerCrop() .into(viewHolder.Image);

请注意，我使用 .load(new File(String.valueOf(Uri))) 而不是 .load(uri)。如果直接加载 URI，视图将 return 为空。

如果您从 url 加载 图像，它应该像这样加载：

Picasso.with(mContext) .load(URL) .placeholder(R.drawable.profile) .resize(800, 800) .centerCrop() .into(viewHolder.Image);

所以我的适配器最终看起来像这样：

public class MyNiftyAdapter extends CursorAdapter{ private LayoutInflater mInflater; private Cursor cur; private Context mContext; public MyNiftyAdapter(Context context, Cursor c) { super(context,c); this.mInflater = LayoutInflater.from(context); this.mContext = context; this.cur = c; } public MyNiftyAdapter(Context context, Cursor c, boolean autoRequery) { super(context, c, autoRequery); this.mInflater = LayoutInflater.from(context); this.cur = c; this.mContext = context; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if(convertView == null) { convertView = this.mInflater.inflate(R.layout.single_item, null); viewHolder = new ViewHolder(); viewHolder.name = (TextView)convertView.findViewById(R.id.txtName); viewHolder.Age = (TextView)convertView.findViewById(R.id.studentage); viewHolder.Id = (TextView)convertView.findViewById(R.id.rowid); viewHolder.Image = (CircularImageView)convertView.findViewById(R.id.imgFood); convertView.setTag(viewHolder); }else { viewHolder = (ViewHolder)convertView.getTag(); } this.cur.moveToPosition(position); viewHolder.name.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper.NAME))); viewHolder.Age.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper.AGE))); viewHolder.Id.setText(this.cur.getString(this.cur.getColumnIndex(SQLiteHelper._ID))); Uri jg = Uri.parse(this.cur.getString(this.cur.getColumnIndex("imagepath"))); Picasso.with(mContext) .load(new File(String.valueOf(jg))) .placeholder(R.drawable.profile) .resize(800, 800) .centerCrop() .into(viewHolder.Image); return convertView; } @Override public void bindView(View view, Context context, Cursor cursor) { } @Override public View newView(Context context, Cursor cursor, ViewGroup parent) { // Dont need to do anything here return null; } static class ViewHolder { TextView name; TextView Age; TextView Id; CircularImageView Image; } }

谢谢大家的帮助。

Answer 1

您可以使用 Picasso 库来显示图像。

compile 'com.squareup.picasso:picasso:2.5.2'

在你的适配器中是这样的：

Uri jg = Uri.parse(this.cur.getString(this.cur.getColumnIndex("imagepath")));
Picasso.with(context).load(jg).into(viewHolder.Image);

Answer 2

对于上下文

public class MyNiftyAdapter extends CursorAdapter{
private LayoutInflater mInflater;
private Cursor cur;
private Context mContext;

public MyNiftyAdapter(Context context, Cursor c) {
    super(context,c);
    this.mInflater = LayoutInflater.from(context);
this.mContext= context;
    this.cur = c;
}
public MyNiftyAdapter(Context context, Cursor c, boolean autoRequery)
{
    super(context, c, autoRequery);
    this.mInflater = LayoutInflater.from(context);
    this.cur = c;
    this.mContext= context;

}

然后使用：

Uri jg = Uri.parse(this.cur.getString(this.cur.getColumnIndex("imagepath")));
Picasso.with(mContext).load(jg).into(viewHolder.Image);

使用 setImageURI 设置 Uri 时出现 OutOfMemoryError

OutOfMemoryError when setting Uri with setImageURI

java

sqlite

android

android-memory