Android TextView url判别，Spannable的使用

首先看一个链接文本执行流程的大概示意图?


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看了这个流程应该对大概URL, Email等的链接实现有所了解了，所以直接看代码把?

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TextView view1 = (TextView) findViewById( R.id.view1 );TextView view2 = (TextView) findViewById( R.id.view2 );TextView view3 = (TextView) findViewById( R.id.view3 );TextView view4 = (TextView) findViewById( R.id.view4 );TextView view5 = (TextView) findViewById( R.id.view5 );TextView view6 = (TextView) findViewById( R.id.view6 );SpannableString text1 = new SpannableString("red");text1.setSpan(new ForegroundColorSpan(Color.RED), 0, 3, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view1.setText( text1 );SpannableString text2 = new SpannableString("green");text2.setSpan(new BackgroundColorSpan(Color.GREEN), 0, 5, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view2.setText( text2 );SpannableString text3 = new SpannableString("i am bold");text3.setSpan(new StyleSpan(Typeface.BOLD_ITALIC), 5, 9, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view3.setText( text3 );SpannableString text4 = new SpannableString("underline");text4.setSpan(new UnderlineSpan(), 0, 9, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view4.setText( text4 );SpannableString text5 = new SpannableString("delete line");text5.setSpan(new StrikethroughSpan(), 7, 11, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view5.setText( text5 );SpannableString text6 = new SpannableString("make a call");text6.setSpan(new URLSpan("tel:123456789"), 7, 11, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view6.setText( text6 );view6.setMovementMethod(LinkMovementMethod.getInstance());// 还有ImageSpan等

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 <?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical">    <TextView	android:id="@+id/view1"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/>	<TextView	android:id="@+id/view2"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/>	<TextView	android:id="@+id/view3"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/>	<TextView	android:id="@+id/view4"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/>	<TextView	android:id="@+id/view5"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/>	<TextView	android:id="@+id/view6"	android:layout_width="wrap_content"	android:layout_height="50sp"	android:gravity="center"	/></LinearLayout> 

?默认的链接在点击时，只会跳转到响应的View，如点击URL时，打开浏览器，点击电话号码时，打开拨号界面。 如果我们要在点击某连接时，跳转到某个Activity呢。?

URLSpan继承自ClickableSpan，所以我们的出发点也是这个类，然后重写其中的onClick?

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public class IntentSpan extends ClickableSpan implements ParcelableSpan {	private Intent mIntent;		public IntentSpan(Intent toActivity) {		mIntent = toActivity;	}		@Override	public void onClick(View sourceView) {		Context context = sourceView.getContext();		context.startActivity( mIntent );	}		@Override	public int getSpanTypeId() {		return 100;	}		@Override	public int describeContents() {		return 0;	}		@Override	public void writeToParcel(Parcel dest, int flag) {		// don't write to parcel	}		public Intent getIntent() {		return mIntent;	}} 

?使用的话和URLSpan差不多?

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SpannableString text6 = new SpannableString("make a call");Intent intent = new Intent(context, SomActivity.class);text6.setSpan(new IntentSpan(intent), 7, 11, Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);view6.setText( text6 );view6.setMovementMethod(LinkMovementMethod.getInstance());

?http://yuanzhifei89.iteye.com/blog/983944