为什么我的imageview不采取位图并显示它？

Question

public class UserlistActivity extends AppCompatActivity { 

    static ListView userlist; 
    static String[] users; 
    ImageView user; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_userlist); 
     setIDs(); 
     Bitmap userphoto = null; 
     try { 
      userphoto = getBitmapFromAsset("user dashboard.png"); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
     new Gate(this, "USERLIST").execute(); 
     String mDrawableName = "user dashboard"; 
     int resID = getResources().getIdentifier(mDrawableName , "assets", getPackageName()); 
     user.setImageResource(resID); 
     user.setImageBitmap(userphoto); 
    } 

    private Bitmap getBitmapFromAsset(String strName) throws IOException 
    { 
     AssetManager assetManager = getAssets(); 
     InputStream istr = assetManager.open(strName); 
     Bitmap bitmap = BitmapFactory.decodeStream(istr); 
     return bitmap; 
    } 

    private void setIDs() { 
     userlist = (ListView) findViewById(R.id.userlist); 
     View inflatedView = getLayoutInflater().inflate(R.layout.userlist_list_item, null); 
     user = (ImageView) inflatedView.findViewById(R.id.user); 
    } 

    static void fillData(Context context) { 
     ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(context, R.layout.userlist_list_item, R.id.listtext, users); 
     userlist.setAdapter(arrayAdapter); 
    } 

这里我试图getbitmap（这是在其他活动中工作正常），并将它附加到图像视图，这是我传递给适配器的列表项自定义布局的一部分，但我不知道在哪里问题，图像不会出现

编辑::

我加入照片的另一个副本绘制这样我就可以添加源并跳过努力

Answer 1

我觉得它固定您忘了将inflatedView添加到您的parent视图

使用此代码：

LinearLayout parent = (LinearLayout)findViewById(R.id.parent_layout); 
View inflatedView = getLayoutInflater().inflate(R.layout.userlist_list_item, null); 
user = (ImageView) inflatedView.findViewById(R.id.user); 
parent.addView(inflatedView); 

使用下面的方法：

private Bitmap getBitmapFromAsset(String strName) 
{ 
    AssetManager assetManager = getAssets(); 
    InputStream istr = null; 
    try { 
     istr = assetManager.open(strName); 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 
    Bitmap bitmap = BitmapFactory.decodeStream(istr); 
    return bitmap; 
}