我注意到我们可以使用setMovementMethod使这些链接可以点击：

tv.setText("Phone number is: +32485123456 and url is http://www.blabla.com");
tv.setMovementMethod(LinkMovementMethod.getInstance());

这非常有效,但在某些设备上,它会因ActivityNotFoundException而崩溃,这是非常难以理解的. (见下面的代码)

这些问题出现在我的开发者控制台中,我无法重现它们.

我面临的一个大问题是我无法在我的活动中尝试/捕获代码,因为点击是由LinkMovementMethod处理的

关于如何避免此类错误的任何想法？

android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.VIEW dat=www.vlaamsbrabant.be/zoutleeuw (has extras) }
    at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1408)
    at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
    at android.app.Activity.startActivityForResult(Activity.java:2817)
    at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:817)
    at android.app.Activity.startActivity(Activity.java:2923)
    at android.text.style.URLSpan.onClick(URLSpan.java:62)
    at android.text.method.LinkMovementMethod.onTouchEvent(LinkMovementMethod.java:216)
    at android.widget.TextView.onTouchEvent(TextView.java:6788)
    at android.view.View.dispatchTouchEvent(View.java:3766)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:936)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.superdispatchTouchEvent(PhoneWindow.java:1896)
    at com.android.internal.policy.impl.PhoneWindow.superdispatchTouchEvent(PhoneWindow.java:1159)
    at android.app.Activity.dispatchTouchEvent(Activity.java:2086)
    at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1880)
    at android.view.ViewRoot.handleMessage(ViewRoot.java:1811)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:123)
    at android.app.ActivityThread.main(ActivityThread.java:4627)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:521)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
    at dalvik.system.NativeStart.main(Native Method)

就像是：

private class MovementCheck extends LinkMovementMethod {

    @Override
    public boolean onTouchEvent( TextView widget,Spannable buffer,MotionEvent event ) {
        try {
            return super.onTouchEvent( widget,buffer,event ) ;
        } catch( Exception ex ) {
            Toast.makeText( MainActivity.this,"Could not load link",Toast.LENGTH_LONG ).show();
            return true;
        }
    }

}

如果没有应用程序设置来处理意图,将显示错误消息.

另一种选择是使用this question中的方法提前确定是否准备好处理链接的任何内容.

public void readFields(DataInput in) throws IOException {
    this.blockId = in.readLong();
    this.numBytes = in.readLong();
    this.generationStamp = in.readLong();
    if (numBytes < 0) {
      throw new IOException("Unexpected block size: " + numBytes);//抛出异常，要是的话就不会抛出，而只是System.out.println错误提示，
    }

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open (PLsql,"|sqlplus -s $db_url");
print PLsql <<ENDsql;
... some sql statements ...
exit;
ENDsql
close(PLsql);

我的问题是如果遇到一些错误,如何捕获执行sql语句的退出代码.我认为使用DBI会好得多,但我更愿意找到解决上述问题的方法.非常感谢！

If the filehandle came from a piped open,close returns false if one of the other syscalls involved fails or if its program exits with non-zero status. If the only problem was that the program exited non-zero,$! will be set to 0 . Closing a pipe also waits for the process executing on the pipe to exit–in case you wish to look at the output of the pipe afterwards–and implicitly puts the exit status value of that command into $? and ${^CHILD_ERROR_NATIVE}.

要点是close()将为任何错误返回false,$！只有在系统调用有错误时才会设置,并且$？将被设置为退出状态.有关详情,请参阅Error Variables in perlvar.

价钱：

class Pricing extends CActiveRecord
{
/**
 * Returns the static model of the specified AR class.
 * @param string $className active record class name.
 * @return Pricing the static model class
 */
public static function model($className=__CLASS__)
{
    return parent::model($className);
}

/**
 * @return string the associated database table name
 */
public function tableName()
{
    return 'pricing';
}

/**
* @return string the primary key
*/
public function primaryKey(){
    return 'ID';
}

...

/**
 * @return array relational rules.
 */
public function relations()
{
    // NOTE: you may need to adjust the relation name and the related
    // class name for the relations automatically generated below.
    return array(
        'xpricing_routes' => array(self::HAS_MANY,'PricingRoutes','ID_pricing'),);
}

和PricingRoutes：

class PricingRoutes extends CActiveRecord
{
/**
 * Returns the static model of the specified AR class.
 * @param string $className active record class name.
 * @return PricingRoutes the static model class
 */
public static function model($className=__CLASS__)
{
    return parent::model($className);
}

/**
 * @return string the associated database table name
 */
public function tableName()
{
    return 'pricing_routes';
}

/**
* @return string the primary key
*/
public function primaryKey(){
    return 'ID';
}
...
/**
 * @return array relational rules.
 */
public function relations()
{
    // NOTE: you may need to adjust the relation name and the related
    // class name for the relations automatically generated below.
    return array(
        'xpricing' => array(self::BELONGS_TO,'Pricing',);
}

然后在控制器中我们有：

$criteria = new CDbCriteria;
$criteria->with = array('xpricing_routes'); 
$criteria->together=true;       

$pricing_records = Pricing::model()->findAll($criteria);
$pricing_records_arr = CHtml::listData($pricing_records,'id','name');

echo '<pre>';
print_r($pricing_records);
print_r($pricing_record_arr);
echo '</pre>';

您可能已经知道,我们有2个名为pricing和pricing_routes的表.定价路由表有一个名为ID_pricing的外键,它转到定价表中的ID字段.定价表有一个条目,pricing_routes表有4个条目,它们都具有ID_pricing字段中定价表中一个项目的主键.所以我们应该得到4个结果给我们正在运行的查询,当我运行Yii用AR生成的查询时,这就是我得到的.

我们遇到的问题是$pricing_records变量是一个只有一个Pricing对象的数组.该对象包含我们需要的数据,但不是真正可用的数据. $pricing_records_arr变量只是一个空数组.我找到的文档似乎表明我们应该获得一组定价对象,每个定价对象都包含来自pricing_routes表的信息.我们知道使用AR可能不是获取此数据的最佳方式,但我们有理由让这个工作,所以任何有关如何做到这一点的想法将非常感激.

编辑：

事实证明,这最终误解了我的回归.对这个问题的评论给了我所需要的信息.

$pricing_records = Pricing::model()->findAll($criteria);

您将只获得一个活动记录,其中的属性填充了表“定价”中的值.
如果您想从“pricing_routes”中获取属于此特定“定价”的所有记录,则必须致电

$pricing_records->xpricing_routes

其中“xpricing_routes”是您在模型中正确定义的关系的名称.它返回PricingRoutes数组,如果没有匹配的记录,则返回null.