Android學習之Textview的使用
阿新 • • 發佈:2019-02-16
TextView顯示文字控制元件
示例一:顯示文字(url、不同大小、字型、顏色)
示例二:單擊連結彈出Activity
示例三:使用TextView實現跑馬燈的效果
示例一:
顯示文字(url、不同大小、字型、顏色)
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.administrator.textviewdemo.MainActivity"> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/textview1" android:padding="20sp"/> <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:id="@+id/textview2" android:autoLink="all" android:padding="20sp"/> </LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity { private TextView textView1,textView2; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView1 = (TextView) findViewById(R.id.textview1); textView2 = (TextView) findViewById(R.id.textview2); //新增一段html的標誌 String html = "<font color='red'>I Love android</font><br>"; html+="<font color='#0000ff'><big><i>I Love android</i></big></font><p>"; html+="<big><a href='http://www.baidu.com'>百度</a></big>"; CharSequence charSequence = Html.fromHtml(html); textView1.setText(charSequence); //點選的時候產生超連結 textView1.setMovementMethod(LinkMovementMethod.getInstance()); //在Activity_main_xml中已經設定了android:autoLink="all" String textString = "我的URL:http://www.sina.com\n"; textString += "我的電話:9878798789"; textView2.setText(textString); } }
示例二:
單擊連結彈出Activity
MainActivity.java
public class MainActivity extends AppCompatActivity { private TextView textView1; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView1 = (TextView) findViewById(R.id.textview1); String str1 = "顯示Activity1"; //SpannableString主要用來拆分字串 SpannableString spannableString1 = new SpannableString(str1); spannableString1.setSpan(new ClickableSpan() { @Override public void onClick(View view) { Intent intent = new Intent(MainActivity.this,Activity1.class); startActivity(intent); } }, 0, str1.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE); textView1.setText(spannableString1); textView1.setMovementMethod(LinkMovementMethod.getInstance()); } }
Activity1.java
public class Activity1 extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_1);
setTitle("這是Activity1");
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.administrator.textviewdemo.MainActivity">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textview1"
android:padding="20sp"/>
</LinearLayout>
示例三:
使用TextView實現跑馬燈的效果
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.administrator.textviewdemo.MainActivity">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/textview1"
android:singleLine="true"
android:ellipsize="marquee"
android:marqueeRepeatLimit="marquee_forever"
android:focusable="true"
android:focusableInTouchMode="true"/>
</LinearLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
private TextView textView1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView1 = (TextView) findViewById(R.id.textview1);
//這種格式的話可以在滾動中點選進行連結
String html ="<big><a href='http://www.baidu.com'>百度一下</a></big>";
html+= "【珠海市公安局】遇到這些問題怎麼破:一、騙子說網上有你的通緝令,公檢法電話找你做筆錄。二、物品遺失哪裡可以發尋物啟示?三、如何辨別謠言?微信關注“珠海公安”,不用你花一分錢的貼身安全祕書。";
html+="<big><a href='http://www.baidu.com'>百度一下</a></big>";
CharSequence charSequence = Html.fromHtml(html);
textView1.setText(charSequence);
textView1.setMovementMethod(LinkMovementMethod.getInstance());
}
}