Spinner值的获取和设置默认值

àì夳堔傛蜴生んèń 2021-12-17 10:49 461阅读 0赞

//设置Spinner样式android.R.layout.simple_spinner_item，绑定数组数据array，将数组内容和ArrayAdapter连接
    		ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
    				android.R.layout.simple_spinner_item, array);
    		adapter
    				.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    		mSpinner.setAdapter(adapter);
    		//设置默认选中
    		mSpinner.setSelection(2,true);
    		//添加监听事件
    		mSpinner.setOnItemSelectedListener(new OnItemSelectedListener() {
    
    			@Override
    			public void onItemSelected(AdapterView<?> adapterView, View view,
    					int position, long id) {
    				//获取选中值
    				Spinner spinner = (Spinner) adapterView;
    				String data = (String) spinner.getItemAtPosition(position);
    			}
    
    			@Override
    			public void onNothingSelected(AdapterView<?> arg0) {
    				// TODO Auto-generated method stub
    
    			}
    		});

参考：[http://www.cnblogs.com/over140/archive/2010/09/25/1834469.html][http_www.cnblogs.com_over140_archive_2010_09_25_1834469.html]

二. Spinner的数据绑定方式

1、 通过数组字符串绑定

private static final String[] m_Countries = { "111", "222", "333", "444", "555" };   //定义数组
    
       public String[]  petArray = new String[] { "狗", "猫", "其他" };

使用方法如上例

2、通过资源文件配置：比如values文件夹中的：arrays.xml、colors.xml、ids.xml、strings.xml、styles.xml等等

<string-array name="debitCardNumber">
            <item>信用卡111</item>
            <item>信用卡222</item>
            <item>信用卡333</item>
            <item>信用卡444</item>
            <item>信用卡555</item>
        </string-array>

绑定方法：

// 准备一个数组适配器  
            // R.array.colors : 直接从strings.xml去数据  
            // android.R.layout.simple_spinner_item ： 设置Spinner样式（无下拉列表时）  
            ArrayAdapter<CharSequence> arrayAdapter = ArrayAdapter  
                    .createFromResource(this, R.array.colors,  
                            android.R.layout.simple_spinner_item);  
            // 设置下拉列表样式  
            arrayAdapter  
                    .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  
            // 为下拉列表设置适配器  
            spinner.setAdapter(arrayAdapter);  
            // 为下拉列表绑定事件监听器  
            spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {  
      
                @Override  
                public void onItemSelected(AdapterView<?> parent, View view,  
                        int position, long id) {  
                    Toast.makeText(  
                            SpinnerDemoActivity.this,  
                            "选择的色彩： "  
                                    + parent.getItemAtPosition(position).toString(),  
                            Toast.LENGTH_LONG).show();  
                }  
      
                @Override  
                public void onNothingSelected(AdapterView<?> parent) {  
      
                }  
            });

3、数据库存储

三、 Spinner实现省市二级联动

ArrayAdapter<String> adapterProvince = new ArrayAdapter<String>(
    				this,
    				android.R.layout.simple_spinner_item, provinceArray);
    		adapterProvince
    				.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    		mSpinnerProvince.setAdapter(adapterProvince);
    //		mSpinnerProvince.setSelection(2,true);//设置默认选中
    		mSpinnerProvince
    				.setOnItemSelectedListener(new OnItemSelectedListener() {
    
    					@Override
    					public void onItemSelected(AdapterView<?> adapterView,
    							View view, int position, long id) {
    						Spinner spinner = (Spinner) adapterView;
    						String pro = (String) spinner
    								.getItemAtPosition(position);
    						mUserProvince = pro;
    
    						ArrayAdapter<String> adapter = new ArrayAdapter<String>(
    								this,
    								android.R.layout.simple_spinner_item, city);
    						adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    						mSpinnerCity.setAdapter(adapter);
    						mSpinnerCity
    								.setOnItemSelectedListener(new OnItemSelectedListener() {
    
    									@Override
    									public void onItemSelected(
    											AdapterView<?> adapterView,
    											View view, int position, long id) {
    										Spinner spinner = (Spinner) adapterView;
    										String pro = (String) spinner
    												.getItemAtPosition(position);
    										mUserCity = pro;
    										Log.v("city", "mUserProvince:"
    												+ mUserProvince
    												+ "   mUserCity:" + mUserCity);
    									}
    
    									@Override
    									public void onNothingSelected(
    											AdapterView<?> arg0) {
    										// TODO Auto-generated method stub
    
    									}
    
    								});
    					}

直接用string设置默认选中的方法：

int pos=adapter.getPosition(str);
    
    mSpinnerCity.setSelection(pos);

转载于:https://www.cnblogs.com/cc-Cheng/archive/2012/10/10/2718739.html

[http_www.cnblogs.com_over140_archive_2010_09_25_1834469.html]: http://www.cnblogs.com/over140/archive/2010/09/25/1834469.html