In meiner Anwendung lade ich ein Bild aus der Galerie hoch und möchte dieses Bild in der SQLite-Datenbank speichern. Wie speichere ich eine Bitmap in der Datenbank? Ich konvertiere Bitmap in eine Zeichenfolge und speichere sie in der Datenbank. Beim Abrufen aus der Datenbank kann ich diese Zeichenfolge ImageView nicht zuweisen, da es sich um eine Zeichenfolge handelt.
Imageupload12 .java:
public class Imageupload12 extends Activity {
Button buttonLoadImage;
ImageView targetImage;
int i = 0;
Database database = new Database(this);
String i1;
String img;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main5);
buttonLoadImage = (Button) findViewById(R.id.loadimage);
targetImage = (ImageView) findViewById(R.id.targetimage);
Bundle b = getIntent().getExtras();
if (b != null) {
img = b.getString("image");
targetImage2.setImageURI("image");
//i am getting error as i cant assign string to imageview.
}
buttonLoadImage.setOnClickListener(new Button.OnClickListener() {
public void onClick(View arg0) {
// TODO Auto-generated method stub
Intent intent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
Log.i("photo", "" + intent);
startActivityForResult(intent, i);
i = i + 1;
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 0:
if (resultCode == RESULT_OK) {
Uri targetUri = data.getData();
// textTargetUri.setText(targetUri.toString());
Bitmap bitmap;
try {
bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(targetUri));
targetImage.setImageBitmap(bitmap);
i1 = bitmap.toString();
Log.i("firstimage........", "" + i1);
targetImage.setVisibility(0);
SQLiteDatabase db = database.getWritableDatabase();
db.execSQL("INSERT INTO UPLOAD VALUES('" + i1 + "');");
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
break;
}
}
}
Image.class:
public class Image extends Activity {
Database database = new Database(this);
static EfficientAdapter adapter, adapter1;
static ListView lv1;
static SQLiteDatabase db;
static EfficientAdapter adp;
static Cursor c1;
static Vector < String > IMAGE = new Vector < String > ();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
db = database.getReadableDatabase();
c1 = db.rawQuery("select * from UPLOAD;", null);
if (c1.moveToFirst()) {
do {
IMAGE.add(c1.getString(0).toString());
} while (c1.moveToNext());
c1.close();
}
lv1 = (ListView) findViewById(R.id.List);
adapter = new EfficientAdapter(this);
lv1.setAdapter(adapter);
ImageView add = (ImageView) findViewById(R.id.imv1a);
add.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
IMAGE.clear();
Intent i = new Intent(Image.this, Imageupload12.class);
startActivity(i);
}
});
}
private static class EfficientAdapter extends BaseAdapter {
// protected final Context Context = null;
protected LayoutInflater mLayoutInflater;
AlertDialog.Builder aBuilder;
public EfficientAdapter(Context context) {
// TODO Auto-generated constructor stub
mLayoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return IMAGE.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder mVHolder;
if (convertView == null) {
convertView = mLayoutInflater.inflate(R.layout.pjtlistdetails, parent, false);
mVHolder = new ViewHolder();
mVHolder.t1 = (TextView) convertView.findViewById(R.id.pjtdetails);
mVHolder.time = (TextView) convertView.findViewById(R.id.name);
mVHolder.imv = (ImageButton) convertView.findViewById(R.id.editic);
mVHolder.imvd = (ImageView) convertView.findViewById(R.id.delete);
mVHolder.imvf = (ImageView) convertView.findViewById(R.id.fwd);
mVHolder.imv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String img = IMAGE.elementAt(position);
Log.i("image...", "" + img);
Context ctx = v.getContext();
Intent myIntent = new Intent();
ctx = v.getContext();
myIntent.setClass(ctx, Imageupload12.class);
myIntent.putExtra("image", img);
ctx.startActivity(myIntent);
IMAGE.clear();
}
});
static class ViewHolder {
ImageButton imv;
ImageView imvd, imvf;
}
}
}
}
}