JAVA基础:androidtextView如何加入连接方式
android textView 插手毗连体例:1:使用android:autoLink="all" 只需在textview中插手这个属性 在琅缦沔写的文字中包含网址、电话、email的会自动插手毗连地址。
如:
2:uses a string resource containing explicit tags to specify
links.
如: text2: This is some other
text, with a link specified
via antag.Use a \"tel:\" URL
to dial a phone number.
别忘了
TextView t2 = (TextView) findViewById(R.id.text2);
t2.setMovementMethod(LinkMovementMethod.getInstance());
3: builds the text in the Java code using HTML
TextView t3 = (TextView) findViewById(R.id.text3);
t3.setText(Html.fromHtml("text3:Text with a "
+ "link "
+ "created in the Java source code using HTML."));
t3.setMovementMethod(LinkMovementMethod.getInstance());
4:字符串进取体例
SpannableString ss = new SpannableString("text4: Click here to dial the phone.");
ss.setSpan(new StyleSpan(Typeface.BOLD), 0, 6, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
ss.setSpan(new URLSpan("tel:4155551212"), 13, 17, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
TextView t4 = (TextView) findViewById(R.id.text4);
t4.setText(ss);
t4.setMovementMethod(LinkMovementMethod.getInstance());
Android中我们为了实现文本的滚动可以在ScrollView中嵌入一个TextView,其实TextView自己也可以实现多行滚动的,事实下场ScrollView必需只能有一个直接的子类结构。只要在layout中简单设置几个属性就可以轻松实现
当然我们为了让TextView动起来,还需要用到TextView的setMovementMethod体例设置一个滚动实例,代码如下
TextView tvAndroid123 = (TextView)findViewById(R.id.tvCWJ);
tvAndroid123.setMovementMethod(ScrollingMovementMethod.getInstance()); // Android开发网提醒相关的可以查看SDK中android.text.method分支体味更多
ad_link = (TextView) findViewById(R.id.ad_link);
ad_link.setText(Html.fromHtml(""+Html.fromHtml(mURL.getLabel()+"")));
ad_link.setMovementMethod(LinkMovementMethod.getInstance());
ArithmeticExecption:算术异常类:
示例:
package com.darkmi.basic;
public class Test {
public static void main(String[] args) {
int a = 10 / 0;
System.out.println(a);
}
}
异常信息如下:
Exception in thread "main" java.lang.ArithmeticException: / by zero
at com.darkmi.basic.Test.main(Test.java:6)
ClassCastException:类型强制转换异常
示例:
package com.darkmi.basic;
public class Test {
public static void main(String[] args) {
testParse("aaa");
}
public static void testParse(Object str){
Integer i = (Integer)str;
}
}
异常信息如下:
Exception in thread "main" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer
at com.darkmi.basic.Test.testParse(Test.java:10)
at com.darkmi.basic.Test.main(Test.java:6)
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