1.AS(3.6.1) TextView(设置字的大小/颜色 按钮点击事件 下划线 跑马灯)

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
 3 
 4         android:layout_width="match_parent"
 5         android:layout_height="match_parent"
 6         android:orientation="vertical">
 7     <Button
 8         android:id="@+id/btn_textView"
 9         android:layout_width="match_parent"
10         android:layout_height="100dp"
11         android:text="TextView"/>
12 
13 </LinearLayout>

 1 package com.example.helloandroid;
 2 
 3 import android.os.Bundle;
 4 import androidx.appcompat.app.AppCompatActivity;
 5 import android.view.View;
 6 import android.widget.Button;
 7 import android.content.Intent;
 8 import android.widget.TextView;
 9 
10 public class MainActivity extends AppCompatActivity {
11 private Button mBtnTextView;
12     @Override
13     protected void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.activity_main);
16         mBtnTextView = findViewById(R.id.btn_textView);
17         mBtnTextView.setOnClickListener(new View.OnClickListener() {
18             @Override
19             public void onClick(View v) {
20                 Intent intent = new Intent(MainActivity.this, TextViewActivity.class);
21                 startActivity(intent);
22             }
23         });
24     }
25 }

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical"
 6     android:padding="24dp">
 7     <TextView
 8         android:id="@+id/tv_1"
 9         android:layout_width="wrap_content"
10         android:layout_height="wrap_content"
11         android:text="@string/text_view1"
12         android:textColor="#000000"
13         android:textSize="24sp"/>
14     <TextView
15         android:id="@+id/tv_2"
16         android:layout_width="50dp"
17         android:layout_height="wrap_content"
18         android:maxLines="1"
19         android:ellipsize="end"
20         android:text="@string/text_view2"
21         android:textColor="#000000"
22         android:textSize="24sp"
23         android:layout_marginTop="10dp"/>
24     <TextView
25         android:id="@+id/tv_3"
26         android:layout_width="wrap_content"
27         android:layout_height="wrap_content"
28         android:text="@string/text_view3"
29         android:textColor="#000000"
30         android:textSize="24sp"/>
31     <TextView
32         android:id="@+id/tv_4"
33         android:layout_width="wrap_content"
34         android:layout_height="wrap_content"
35         android:text="@string/text_view4"
36         android:textColor="#000000"
37         android:textSize="24sp"/>
38     <TextView
39         android:id="@+id/tv_5"
40         android:layout_width="wrap_content"
41         android:layout_height="wrap_content"
42         android:text="@string/text_view5"
43         android:textColor="#000000"
44         android:textSize="24sp"/>
45     <TextView
46         android:id="@+id/tv_6"
47         android:layout_width="wrap_content"
48         android:layout_height="wrap_content"
49         android:text="@string/text_view6"
50         android:singleLine="true"
51         android:ellipsize="marquee"
52         android:marqueeRepeatLimit="-1"
53         android:focusable="true"
54         android:focusableInTouchMode="true"
55         android:textColor="#000000"
56         android:textSize="24sp"/>
57 
58 </LinearLayout>

 1 package com.example.helloandroid;
 2 
 3 import androidx.appcompat.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.text.Html;
 6 import android.widget.TextView;
 7 import android.graphics.Paint;
 8 
 9 public class TextViewActivity extends AppCompatActivity {
10     private TextView mTv3;//声明
11     private TextView mTv4;
12     private TextView mTv5;
13     private TextView mTv6;
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_text_view);
18 
19         mTv3 = (TextView)findViewById(R.id.tv_3);//与控件进行连接
20         mTv3.getPaint().setFlags(Paint.STRIKE_THRU_TEXT_FLAG);//设置中划线
21 
22         mTv4 = (TextView)findViewById(R.id.tv_4);//与控件进行连接
23         mTv4.getPaint().setFlags(Paint.UNDERLINE_TEXT_FLAG);//设置下划线
24 
25         mTv5 = (TextView)findViewById(R.id.tv_5);//与控件进行连接
26         mTv5.setText(Html.fromHtml("<u>下划线</u>"));
27 
28         mTv6 = (TextView)findViewById(R.id.tv_6);//与控件进行连接
29         mTv6.setSelected(true);
30     }
31 }

1 <resources>
2     <string name="app_name">HelloAndroid</string>
3     <string name="text_view1">HelloWorld</string>
4     <string name="text_view2">HelloAndroid</string>
5     <string name="text_view3">中划线</string>
6     <string name="text_view4">下划线</string>
7     <string name="text_view5">下划线</string>
8     <string name="text_view6">跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯跑马灯</string>
9 </resources>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3     package="com.example.helloandroid">
 4 
 5     <application
 6         android:allowBackup="true"
 7         android:icon="@mipmap/ic_launcher"
 8         android:label="@string/app_name"
 9         android:roundIcon="@mipmap/ic_launcher_round"
10         android:supportsRtl="true"
11         android:theme="@style/AppTheme">
12         <activity android:name=".MainActivity">
13             <intent-filter>
14                 <action android:name="android.intent.action.MAIN" />
15 
16                 <category android:name="android.intent.category.LAUNCHER" />
17             </intent-filter>
18         </activity>
19         <activity android:name=".TextViewActivity"></activity>
20     </application>
21 
22 </manifest>