我正在开发一个应用程序,用户将从相机拍摄图片并将其显示在具有图像视图的预览屏幕上.
**CameraCapture.java**
class ButtonClickHandler implements View.OnClickListener
{
public void onClick( View view ){
myVib.vibrate(50);
startCameraActivity();
}
}
protected void startCameraActivity()
{
File filenew = new File( _path );
Uri outputFileUri = Uri.fromFile( filenew );
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE );
intent.putExtra( MediaStore.EXTRA_OUTPUT, outputFileUri );
intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
startActivityForResult( intent, 0 );
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
switch( resultCode )
{
case 0:
break;
case -1:
//pictaken++;
onPhotoTaken();
break;
}
}
protected void onPhotoTaken()
{
//pictaken=true;
Intent i = new Intent(CameraCapture.this,Preview.class);
startActivity(i);
}
在我的预览类中,捕获的图像显示在ImageView上
**Preview.java**
File imgFile = new File("/sdcard/DCIM/Camera/test.jpg");
if(imgFile.exists()){
// Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
ImageView myImage = (ImageView) findViewById(R.id.image);
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
Matrix mat = new Matrix();
String degree="90";
mat.postRotate(Integer.parseInt(degree));
Bitmap bMapRotate = Bitmap.createBitmap(myBitmap, 0, 0,myBitmap.getWidth(),myBitmap.getHeight(), mat, true);
myImage.setImageBitmap(bMapRotate);
//myImage.setImageBitmap(myBitmap);
}
_image = ( ImageView ) findViewById( R.id.image );
有没有办法在ImageView上显示进度条,直到从SD卡加载Captured图像.
Thnx提前:)
