android开发loading实例

package comn.qm; import android.app.Activity; import android.graphics.drawable.AnimationDrawable; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.view.View; import android.view.animation.Animation; import android.view.animation.AnimationUtils; import android.widget.Button; import android.widget.ImageButton; import android.widget.ImageView; import android.widget.ProgressBar; /** * 恰面网 * www.qiamian.com * @author 轻描淡写 * 3 z种自定义 Loading */ public class LoadDemo extends Activity { /** Called when the activity is first created. */ // private ImageButton ib; // private ImageView iv; private Animation animation; private final int STOP_ROTATION_MSG = 1; // private ProgressBar pb; // private ImageView wLoading; Handler handler = new Handler() { public void handleMessage(Message msg) { if (msg.what == STOP_ROTATION_MSG) { // iv.clearAnimation(); // iv.setVisibility(View.INVISIBLE); // ib.setEnabled(true); } super.handleMessage(msg); } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 欢迎界面加载动画 // wLoading = (ImageView) findViewById(R.id.welcomeLoading); // ib = (ImageButton) findViewById(R.id.locateBtn); // iv = (ImageView) findViewById(R.id.locateImageView); // iv.setVisibility(View.INVISIBLE); // ib.setOnClickListener(mClick); // pb = (ProgressBar) findViewById(R.id.goLoad); // pb.setVisibility() animation = AnimationUtils.loadAnimation(this, R.anim.rotate); } @Override public void onWindowFocusChanged(boolean hasFocus) { // 进入就加载不放在 onCreate 方法内 // wLoading.setBackgroundResource(R.drawable.spinner_small); // AnimationDrawable ad=(AnimationDrawable) wLoading.getBackground(); // ad.start(); super.onWindowFocusChanged(hasFocus); } public final Button.OnClickListener mClick = new Button.OnClickListener() { public void onClick(View v) { // ib.setEnabled(false); // iv.setVisibility(View.VISIBLE); // iv.startAnimation(animation); // new Thread(new MyThread()).start(); } }; class MyThread implements Runnable { @Override public void run() { // TODO Auto-generated method stub while (true) { try { Thread.sleep(5000); Message message = new Message(); message.what = STOP_ROTATION_MSG; handler.sendMessage(message); } catch (InterruptedException e) { e.printStackTrace(); } } } } }