android字幕滚动,屏幕宽度计算,时间控制

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匿名网站用户   2020-12-21 11:18   1866   0
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

</RelativeLayout>

package com.example.wordflow;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.util.AttributeSet;
import android.widget.TextView;

public class WordFlow extends TextView {

 float x = 150;
 float y = 300;
 String text = "abc";
 Paint paint ;
 
 public WordFlow(Context context, AttributeSet attrs) {
  super(context, attrs);

  paint = new Paint();
  paint.setColor(Color.RED);
  paint.setStyle(Style.STROKE);
  paint.setTextSize(80);
  setLongClickable(true);
 }

 public WordFlow(Context context) {
  super(context);
  // TODO Auto-generated constructor stub
 }
 
 
 
 @Override
 protected void onDraw(Canvas canvas) {
  
  
  canvas.drawText(text, x, y, paint);
  invalidate();
  super.onDraw(canvas);
 }
 
 
 
 
 
 
 
 
 
 
 
}
package com.example.wordflow;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       // setContentView(R.layout.activity_main);
        WordFlow f = new WordFlow(this);
        setContentView(f);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }
    
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.wordflow"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.wordflow.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>


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