Android的一个多线程和轻量级下载器：GigaGet
jopen
9年前
Android的一个多线程和轻量级下载器：GigaGet。
package us.shandian.giga; import android.app.*; import android.widget.TextView; import android.os.*; import java.util.concurrent.TimeUnit; import us.shandian.giga.get.DownloadManager; import us.shandian.giga.get.DownloadMission; import us.shandian.giga.util.Utility; public class TestActivity extends Activity implements DownloadMission.MissionListener { private DownloadManager mManager; private TextView mText; private long mLastTimeStamp; private long mLastDone = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mText = (TextView) findViewById(R.id.hello); mLastTimeStamp = System.currentTimeMillis(); mManager = new DownloadManager(this, "/storage/sdcard0/GigaGet"); int id = 0; if (mManager.getCount() == 0) { id = mManager.startMission("http://dldir1.qq.com/qqfile/QQIntl/QQi_wireless/Android/qqi_5.0.10.6046_android_office.apk", "QQ.apk"); } else { mManager.resumeMission(id); } mManager.getMission(id).addListener(this); } @Override public void onProgressUpdate(long done, long total) { long nowTimeStamp = System.currentTimeMillis(); long delta = nowTimeStamp - mLastTimeStamp; // Prevent from too fast refresh rate if (delta < 1000) return; float speed = (float) (done - mLastDone) / delta * 1000; mText.setText(String.format("%.2f%% speed:%s %s of %s", (float) done / total * 100, Utility.formatSpeed(speed), Utility.formatBytes(done), Utility.formatBytes(total))); mLastDone = done; mLastTimeStamp = nowTimeStamp; } @Override public void onFinish() { mText.setText("done"); } }