wi-fiがオフのときに画像を次のアクティビティに渡す

Question

私のアプリでは、画像をSQLiteに保存してそこから読み込みます。私はピカソを使ってリサイクルビューでそれを表示することができます。しかし、行をクリックして新しいアクティビティを起動すると、イメージは表示されません。

ここに私のコードです。

このアダプターから、画像と他のデータをデータベースから取得します。

public class MySQLAdapter extends RecyclerView.Adapter<MySQLAdapter.RowHolderClass> { 

private List<SQLiteModel> myList; 
private Context mContext; 
private int focused; 

public MySQLAdapter(Activity activity,ArrayList<SQLiteModel> ss) { 
    this.myList = ss; 
    this.mContext=activity; 
} 

@Override 
public MySQLAdapter.RowHolderClass onCreateViewHolder(ViewGroup parent, int viewType) { 
    View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.sqlite_adapter, null); 

    final RowHolderClass holder = new RowHolderClass(v); 
    return holder; 
} 

@Override 
public void onBindViewHolder(RowHolderClass holder, int position) { 

    final SQLiteModel listItems = myList.get(position); 
    holder.itemView.setSelected(focused==position); 

    Picasso.with(holder.imageView.getContext()) 
      .load(myList.get(position).getSqliteImage()).into(holder.imageView); 

    holder.fName.setText(myList.get(position).getSqliteFirstName()); 
    holder.lName.setText(myList.get(position).getSqliteSecondName()); 
    holder.jobRole.setText(myList.get(position).getSqliteRole()); 
    //holder.imageView.setImageResource(Integer.parseInt(myList.get(position).getSqliteImage())); 
    holder.relativeLayout.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      String first_name = listItems.getSqliteFirstName(); 
      String last_name = listItems.getSqliteSecondName(); 
      String job_role = listItems.getSqliteRole(); 
      String image_url = listItems.getSqliteImage(); 
      String id= String.valueOf(listItems.getSqliteId()); 
      //Log.v("id",id); 

      Intent i = new Intent(mContext, NoInternetDetailedActivity.class); 
      i.putExtra("firstName",first_name); 
      i.putExtra("lastName",last_name); 
      i.putExtra("jobRole",job_role); 
      i.putExtra("imageUrl",image_url); 
      i.putExtra("memberId",id); 

      mContext.startActivity(i); 

     } 
    }); 


} 


@Override 
public int getItemCount() { 
    return myList.size(); 
} 


//ViewHolder pattern used to read the data of the row fast. 
class RowHolderClass extends RecyclerView.ViewHolder { 

    protected ImageView imageView; 
    protected TextView fName, lName, jobRole; 
    protected RelativeLayout relativeLayout; 

    public RowHolderClass(View itemView) { 
     super(itemView); 

     this.relativeLayout = (RelativeLayout) itemView.findViewById(R.id.recLayout); 
     this.imageView = (ImageView) itemView.findViewById(R.id.imageView); 
     this.fName = (TextView) itemView.findViewById(R.id.firstName); 
     this.lName = (TextView) itemView.findViewById(R.id.lastName); 
     this.jobRole = (TextView) itemView.findViewById(R.id.roleView); 

    } 
} 
} 

次に、新しいアクティビティでデータを渡します。

public class NoInternetDetailedActivity extends AppCompatActivity { 
ImageView imageView; 

TextView textView0,textView1,textView2,textView3; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_no_internet_detailed); 


    Intent i = getIntent(); 
    String memberId = i.getExtras().getString("memberId"); 
    String firstName = i.getExtras().getString("firstName"); 
    String lastName = i.getExtras().getString("lastName"); 
    String jobRole = i.getExtras().getString("jobRole"); 
    String image = i.getExtras().getString("imageUrl"); 

    //imageView = (ImageView)findViewById(R.id.newImageView); 
    textView0 = (TextView)findViewById(R.id.textView0); 
    textView1 = (TextView)findViewById(R.id.textView1); 
    textView2 = (TextView)findViewById(R.id.textView2); 
    textView3 = (TextView)findViewById(R.id.textView3); 

    textView0.setText("Member id: "+ memberId); 
    textView1.setText(firstName); 
    textView2.setText(lastName); 
    textView3.setText(jobRole); 

    //This line gives me the exception! 
    Picasso.with(this).load(image).into(imageView); 
    } 
} 

私が得る例外は次のとおりです。

Caused by: java.lang.IllegalArgumentException: Target must not be null. 

at com.squareup.picasso.RequestCreator.into(RequestCreator.java:618) 

at com.squareup.picasso.RequestCreator.into(RequestCreator.java:601) 

任意のアイデア？ありがとう、

Theo。

Answer 1

/*Use this aproach*/ 
WifiManager wifi = (WifiManager)getSystemService(Context.WIFI_SERVICE); 

/* wifi is not enabled */ 

if (!wifi.isWifiEnabled()){ 

    imageView.buildDrawingCache(); 
    Bitmap bitmap = imageView.getDrawingCache(); 

    Intent intent = new Intent(this, NewActivity.class); 
    intent.putExtra("BitmapImage", bitmap); 
} 

/* Receive image on second activity */ 
Bitmap bitmap = (Bitmap) intent.getParcelableExtra("BitmapImage");