在屏幕中显示下拉表框

àì夳堔傛蜴生んèń 2022-09-24 03:29 156阅读 0赞

values:

array.xml:

<?xml version="1.0" encoding="utf-8"?>
    <resources>
        
        <string-array name="countries">
            <item>AA</item>
            <item>BB</item>
            <item>CC</item>
            <item>DD</item>
            <item>EE</item>
            <item>FF</item>
        </string-array>
    </resources>

<?xml version="1.0" encoding="utf-8"?>
    <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:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="Spinner_1"
        />
        
    <Spinner  android:id="@+id/spinner_1"
           android:layout_width="fill_parent"
           android:layout_height="wrap_content"
           android:drawSelectorOnTop="false"
    />
    
    <TextView  
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:text="Spinner_2 From arrays xml file"
        />
     <Spinner  android:id="@+id/spinner_2"
           android:layout_width="fill_parent"
           android:layout_height="wrap_content"
           android:drawSelectorOnTop="false"
    />
        
    </LinearLayout>

package m.usewidget;
    
    import java.util.ArrayList;
    import java.util.List;
    
    import m.usewidget.R;
    
    
    
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.view.View;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.CheckBox;
    import android.widget.EditText;
    import android.widget.Spinner;
    import android.widget.TextView;
    
    public class SpinnerActivity extends Activity {
    	Spinner spinner_c;
    	Spinner spinner_2;
    	private ArrayAdapter<String> aspnCountries;
    	private List<String> allcountries;
    
    	/** Called when the activity is first created. */
    	@Override
    	public void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setTitle("SpinnerActivity");
    		setContentView(R.layout.spinner);
    		find_and_modify_view();
    	}
    
    	private static final String[] mCountries = { "China","Russia","Germany","Ukraine","Belarus","USA"};
    
    	private void find_and_modify_view() {
    		spinner_c = (Spinner) findViewById(R.id.spinner_1);
    		allcountries = new ArrayList<String>();
    		for (int i = 0; i < mCountries.length; i++) {
    			allcountries.add(mCountries[i]);
    		}
    		aspnCountries = new ArrayAdapter<String>(this,
    				android.R.layout.simple_spinner_item, allcountries);
    		aspnCountries
    				.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    		spinner_c.setAdapter(aspnCountries);
    		
    		
    		spinner_2 = (Spinner) findViewById(R.id.spinner_2);
            ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
                    this, R.array.countries, android.R.layout.simple_spinner_item);
            adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
            spinner_2.setAdapter(adapter);
    	}
    
     
    }