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  • Android-Handler更新View加线程

    代码

    package net.blogjava.mobile;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.os.Handler;
    import android.widget.ProgressBar;
    
    public class Main extends Activity
    {
        private ProgressBar progressBar1;
        private ProgressBar progressBar2;
        private Handler handler = new Handler();
        private int count1 = 0;
        private int count2 = 0;
        private Runnable doUpdateProgressBar1 = new Runnable()
        {
    
            @Override
            public void run()
            {
    
                for (count1 = 0; count1 <= progressBar1.getMax(); count1++)
                {
                    handler.post(new Runnable()
                    {
    
                        @Override
                        public void run()
                        {
                            progressBar1.setProgress(count1);
    
                        }
                    });
                }
    
            }
        };
        private Runnable doUpdateProgressBar2 = new Runnable()
        {
    
            @Override
            public void run()
            {
                for (count2 = 0; count2 <= progressBar2.getMax(); count2++)
                {
                    handler.post(new Runnable()
                    {
    
                        @Override
                        public void run()
                        {
                            progressBar2.setProgress(count2);
    
                        }
                    });
                }
    
            }
        };
    
        @Override
        public void onCreate(Bundle savedInstanceState)
        {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);
            progressBar1 = (ProgressBar) findViewById(R.id.progressbar1);
            progressBar2 = (ProgressBar) findViewById(R.id.progressbar2);
    
            Thread thread1 = new Thread(doUpdateProgressBar1, "thread1");
            thread1.start();
            Thread thread2 = new Thread(doUpdateProgressBar2, "thread2");
            thread2.start();
    
        }
    }

    布局

    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:layout_width="fill_parent"
        android:layout_height="fill_parent">
        <ProgressBar android:id="@+id/progressbar1"
            android:layout_width="fill_parent" android:layout_height="wrap_content"
             style="?android:attr/progressBarStyleHorizontal" android:max="20000"
            android:layout_marginTop="10dp" />
        <ProgressBar android:id="@+id/progressbar2"
            android:layout_width="fill_parent" android:layout_height="wrap_content"
            style="?android:attr/progressBarStyleHorizontal" android:max="10000"
            android:layout_marginTop="10dp"  />
    </LinearLayout>
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  • 原文地址:https://www.cnblogs.com/spadd/p/4190041.html
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