android– 如何通过意图传递图像？

概述头等舱publicclassChooseDriverextendsActivityimplementsOnItemClickListener{privatestaticfinalStringrssFeed="http:ade2rise.com/project/seattle/windex.php?itfpage=driver_list";privatestaticfinalStringARRAY_NAME=&quo

头等舱

public class ChooseDriver extends Activity implements OnItemClickListener {  private static final String RSSFeed   = "http://Trade2rise.com/project/seattle/windex.PHP?itfpage=driver_List";    private static final String ARRAY_name = "itfdata";  private static final String ID = "ID";  private static final String name = "name";  private static final String IMAGE = "image";  List<Item> arrayOfList;  ListVIEw ListVIEw;  MyAdapter objAdapter1;  @OverrIDe  protected voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.choose_driver);    ListVIEw = (ListVIEw) findVIEwByID(R.ID.ListVIEw1);    ListVIEw.setonItemClickListener(new OnItemClickListener() {      @OverrIDe      public voID onItemClick(AdapterVIEw<?> adapterVIEw, VIEw vIEw, int position, long ID) {        Item item = (Item) objAdapter1.getItem(position);        Intent intent = new Intent(ChooseDriver.this, DriverDetail.class);        intent.putExtra(ID, item.getID());        intent.putExtra(name, item.getname().toString());        // intent.putExtra(IMAGE, item.getimage().toString());                // image.buildDrawingCache();        // Bitmap image= image.getDrawingCache();        Bundle extras = new Bundle();        // extras.putParcelable("imagebitmap", image);        intent.putExtras(extras);        startActivity(intent);       }    });  }}

二等

public class DriverDetail extends Activity {  private ImageLoader imageLoader;  @OverrIDe  public voID onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentVIEw(R.layout.driver_detail);    ImageVIEw imageVIEw = (ImageVIEw) findVIEwByID(R.ID.imageVIEw1);    TextVIEw tv = (TextVIEw) findVIEwByID(R.ID.tvDname);    Bundle extras = getIntent().getExtras();    Bitmap bmp = (Bitmap) extras.getParcelable("imagebitmap");    imageVIEw.setimageBitmap(bmp );    //imageVIEw.set(getIntent().getExtras().getString("image"));    tv.setText(getIntent().getExtras().getString("name"));  } }

通过使用它我可以很好地显示文本,但我不能在第二个Aactivity上显示图像.

解决方法:

您可以将其作为字节数组传递,并构建位图以在下一个屏幕上显示.但是使用意图我们可以发送缩略图,图标等小图像.这会导致绑定失败.

发件人活动

Intent _intent = new Intent(this, newscreen.class);Bitmap _bitmap; // your bitmapByteArrayOutputStream _bs = new ByteArrayOutputStream();_bitmap.compress(Bitmap.CompressFormat.PNG, 50, _bs);_intent.putExtra("byteArray", _bs.toByteArray());startActivity(i);

接收者活动

if(getIntent().hasExtra("byteArray")) {ImageVIEw _imv= new ImageVIEw(this);Bitmap _bitmap = BitmapFactory.decodeByteArray(        getIntent().getByteArrayExtra("byteArray"),0,getIntent().getByteArrayExtra("byteArray").length);        _imv.setimageBitmap(_bitmap);}

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