如果在2個微調中選擇了兩個項目，則圖像必須以可繪製形式顯示

Question

此處添加2個微調器。如果我選擇特定的item1和item2，則必須顯示特定的圖像。例如，如果選擇「Gujarat」和「Gandhinagr」，則必須顯示圖像abc.png。 Plz幫助我。

public class MainActivity extends Activity implements OnItemSelectedListener { 

private String[] INDIAN_STATE = { "Gujarat", "Andra Pradesh", 
     "Arunachal Pradesh", "Assam", "Bihar", "Chhattisgarh", "Goa", 
     "Haryana", "Himachal Pradesh", "Jammu and Kashmir", "Jharkhand", 
     "Karnataka", "Kerala", "Madya Pradesh", "Maharashtra", "Manipur", 
     "Meghalaya", "Mizoram", "Nagaland", "Orissa", "Punjab", 
     "Rajasthan", "Sikkim", "Tamil Nadu", "Tripura", "Uttaranchal", 
     "Uttar Pradesh", "West Bengal" }; 

private String[] INDIAN_STATE_CAPITAL = { "Gandhinagar", "Hyderabad", 
     "Itangar", "Dispur", "Patna", "Raipur", "Panaji", "Chandigarh", 
     "Shimla", "Srinagar and Jammu", "Ranchi", "Bangalore", 
     "Thiruvananthapuram", "Bhopal", "Mumbai", "Imphal", "Shillong", 
     "Aizawi", "Kohima", "Bhubaneshwar", "Chandigarh", "Jaipur", 
     "Gangtok", "Chennai", "Agartala", "Dehradun", "Lucknow", "Kolkata"  }; 

Spinner spinnerState, spinnerCapital; 
TextView tvState, tvCapital; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 

    System.out.println(INDIAN_STATE.length); 
    System.out.println(INDIAN_STATE_CAPITAL.length); 

    tvState = (TextView) findViewById(R.id.mystate); 
    tvCapital = (TextView) findViewById(R.id.mystatescapital); 

    spinnerState = (Spinner) findViewById(R.id.spinnerstate); 
    spinnerCapital = (Spinner) findViewById(R.id.spinnercapital); 

    ArrayAdapter<String> adapter_state = new ArrayAdapter<String>(this, 
      android.R.layout.simple_spinner_item, INDIAN_STATE); 
    adapter_state 
      .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinnerState.setAdapter(adapter_state); 

    ArrayAdapter<String> adapter_state_capital = new ArrayAdapter<String>(
      this, android.R.layout.simple_spinner_item, 
      INDIAN_STATE_CAPITAL); 
    adapter_state_capital 
      .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
    spinnerCapital.setAdapter(adapter_state_capital); 

    spinnerState.setOnItemSelectedListener(this); 
    spinnerCapital.setOnItemSelectedListener(this); 
} 

public void onItemSelected(AdapterView<?> parent, View view, int position, 
     long id) { 

    spinnerState.setSelection(position); 
    spinnerCapital.setSelection(position); 

    String myState = (String) spinnerState.getSelectedItem(); 
    String myStatesCapital = (String) spinnerCapital.getSelectedItem(); 

    tvState.setText("My State is " + myState); 
    tvCapital.setText("My State is " + myState + ".And its Capital is " 
      + myStatesCapital); 

} 

public void onNothingSelected(AdapterView<?> parent) { 

} 

}

Answer 1

看看文檔： http://developer.android.com/guide/topics/ui/controls/spinner.html

我要去假設，可以有每個州首府多 - 否則，你不需要資本微調在所有。

首先，按照上述微調文檔，擺脫

spinnerState.setSelection(position); 
spinnerCapital.setSelection(position); 

String myState = (String) spinnerState.getSelectedItem(); 
String myStatesCapital = (String) spinnerCapital.getSelectedItem(); 

，只是使用

parent.getItemAtPosition(pos) 

然後，添加調用您要使用顯示方法照片。這裏有一些僞代碼

private Drawable getSelectedImage(String state, String capital){ 

    // Compare your selections here 
    if(state.equals("Foo"){ 
     if(capital.equals("Bar"){ 
       //get and set appropriate image here 
       int imageResource = R.drawable.foo_bar; 
       return getResources().getDrawable(imageResource); 
     } 
    } 
} 

確保您的圖像文件被添加到適當的可繪製文件夾。