联合使用Spinner和setDropDownViewResource

本文主要是介绍联合使用Spinner和setDropDownViewResource，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

layout文件中的main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"   
    >
    <TextView
        android:id="@+id/myTextView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/title"
        />
    <Spinner
        android:id="@+id/mySpinner"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        />
</LinearLayout>

 

layoutout文件中的myspinner_dropdown.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/text1"
    android:layout_width="wrap_content"
    android:layout_height="24sp"
    android:singleLine="true"
    style="?android:attr/spinnerDropDownItemStyle"
    >
</TextView>

 

res目录下新建的anim文件下的my_anim.xml

<?xml version="1.0" encoding="UTF-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:fromXDelta="0"
        android:toXDelta="-100%p"
  android:duration="300"  
        />
      <!-- 位置转换动画小效果 -->    
    <alpha
        android:fromAlpha="3.0"
        android:toAlpha="6.0"
        android:duration="300"  
        />
     <!-- 透明度转换动画效果 -->
</set>

 

public class SpinnergaojiActivity extends Activity implements OnItemSelectedListener,OnTouchListener,OnFocusChangeListener{

 private static final String[] countriesStr = {"美国","英国","日本","韩国"};
 private TextView myTextView;
 private Spinner mySpinner;
 private ArrayAdapter<String> adapter;
 private Animation myAnimation;  //用于动画的
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        myTextView = (TextView)this.findViewById(R.id.myTextView);
        mySpinner = (Spinner)this.findViewById(R.id.mySpinner);
       
        adapter = new ArrayAdapter<String>(SpinnergaojiActivity.this, android.R.layout.simple_spinner_item,countriesStr);
        adapter.setDropDownViewResource(R.layout.myspinner_dropdown);
        mySpinner.setAdapter(adapter);
       
        mySpinner.setOnItemSelectedListener(this);
       
        myAnimation = AnimationUtils.loadAnimation(this, R.anim.my_anim);
        mySpinner.setOnTouchListener(this);
        mySpinner.setOnFocusChangeListener(this);
       
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.spinnergaoji, menu);
        return true;
    }

 @Override
 public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
   long arg3) {
  // TODO Auto-generated method stub
  myTextView.setText("您选择的 是:"+countriesStr[arg2]);
  arg0.setVisibility(View.VISIBLE);
 }

 @Override
 public void onNothingSelected(AdapterView<?> arg0) {
  // TODO Auto-generated method stub
  
 }

 @Override
 public boolean onTouch(View v, MotionEvent event) {
  // TODO Auto-generated method stub
  v.startAnimation(myAnimation);
  v.setVisibility(View.INVISIBLE);
  return false;
 }

 @Override
 public void onFocusChange(View v, boolean hasFocus) {
  // TODO Auto-generated method stub
  
 }
}

 

 

 

 

 

 

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