我在一个gallery应用程序上尝试了android上的imagecrop。我有标准图像适配器和图像详细信息页面。imagedetail 页面上的壁纸和裁剪有两个功能。但我可能犯了很大的错误，但我不明白我如何发送信息并从裁剪页面获取信息。
我尝试使用以下代码将 imageview 上的图像发送到图像裁剪屏幕。
/* image-detail.java */
public class imageDetail extends Activity {
int position;
private Uri imgUri;
Intent i;
ImageView iv;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.imagedetail);
i=getIntent();
position=(Integer) i.getExtras().get("id");
iv = (ImageView) findViewById(R.id.imageViewBig);
iv.setImageResource(ImageAdapter.mThumbIds[position]);
}
public boolean onCreateOptionsMenu(Menu menu){
MenuInflater inflater = getMenuInflater();
inflater.
inflate(R.menu.detailoption,menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
if (item.getItemId()==R.id.dowallpaper){
WallpaperManager myWM=WallpaperManager.getInstance(getApplicationContext());
try {
myWM.setResource(ImageAdapter.mThumbIds[position]);
Toast.makeText(getApplicationContext(),"I did it !", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(getApplicationContext(), "I can't set the Wallpaper :(", Toast.LENGTH_SHORT).show();
e.printStackTrace();
}
}
else if (item.getItemId()==R.id.cropimage){
final Intent intent = new Intent("com.android.camera.action.CROP");
imgUri=iv.getResources(); // I can't get URI
intent.setDataAndType(imgUri, "image/*");
String messageUri = imgUri.toString();
Log.e("heyooo", messageUri);
intent.putExtra("crop", "true");
//indicate aspect of desired crop
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
//indicate output X and Y
intent.putExtra("outputX", 256);
intent.putExtra("outputY", 256);
//retrieve data on return
//intent.putExtra("return-data", true);
//start the activity - we handle returning in onActivityResult
startActivityForResult(intent, 2);
}
return true;
}
}