Android 如何通过意图传递图像?
头等舱Android 如何通过意图传递图像?,android,android-intent,Android,Android Intent,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";
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);
}
});
}
}
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,但我无法在第二个活动中显示图像。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。但使用intent,我们可以发送缩略图、图标等小图像,否则会导致绑定失败 发送者活动 接收器活动
我想您只是将图像路径作为字符串传递,并尝试在其他活动上从此路径加载图像。您从未传递图像,只是在其路径上播放。您是否使用了此附加功能。putParcelable(“imagebitmap”,image);?如何通过路径传递图像?我是一个新用户。请帮助我..虽然这可能会重复,但这将是一个巨大的杀伤力。一个人可以通过一条小路,以一种更轻松的方式完成它。我得到了这个错误java.lang.OutOfMemoryError。当接收器活动正在获取图像时。我该怎么办。我读过这篇文章,但我不明白@amanalm path可以简单地通过intent.putextra(“mediaPath”,“path_value”)传递,因为path是一个字符串。@PankajArora是的,当然,这比传递位图对象更有效
Intent _intent = new Intent(this, newscreen.class);
Bitmap _bitmap; // your bitmap
ByteArrayOutputStream _bs = new ByteArrayOutputStream();
_bitmap.compress(Bitmap.CompressFormat.PNG, 50, _bs);
_intent.putExtra("byteArray", _bs.toByteArray());
startActivity(_intent);
if(getIntent().hasExtra("byteArray")) {
ImageView _imv= new ImageView(this);
Bitmap _bitmap = BitmapFactory.decodeByteArray(
getIntent().getByteArrayExtra("byteArray"),0,getIntent().getByteArrayExtra("byteArray").length);
_imv.setImageBitmap(_bitmap);
}