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package wht.android.loading;import android.content.Context;import android.graphics.Canvas;import android.util.AttributeSet;import android.widget.ImageView;public class LoadingView extends ImageView implements Runnable{ private boolean isStop = false; private int[] imageIds; private int index = 0; private int length = 1; public LoadingView(Context context) { this(context, null); } public LoadingView(Context context, AttributeSet attrs) { super(context, attrs); } public void setImageIds(int[] imageId) { this.imageIds = imageId; if(imageIds != null && imageIds.length > 0) { length = imageIds.length; } } @Override protected void onDetachedFromWindow() { // TODO Auto-generated method stub super.onDetachedFromWindow(); isStop = true; } @Override protected void onDraw(Canvas canvas) { // TODO Auto-generated method stub super.onDraw(canvas); if(imageIds != null && imageIds.length > 0) { this.setImageResource(imageIds[index]); } } @Override public void run() { while(!isStop) { index = ++index % length; postInvalidate(); try { Thread.sleep(400); } catch (InterruptedException e) { e.printStackTrace(); } } } public void startAnim() { new Thread(this).start(); }} |
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package wht.android.loading;import android.app.Activity;import android.os.Bundle;public class MainActivity extends Activity{ private LoadingView main_imageview; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); main_imageview = (LoadingView)findViewById(R.id.main_imageview); initLoadingImages(); new Thread() { @Override public void run() { main_imageview.startAnim(); } }.start(); } private void initLoadingImages() { int[] imageIds = new int[6]; imageIds[0] = R.drawable.loader_frame_1; imageIds[1] = R.drawable.loader_frame_2; imageIds[2] = R.drawable.loader_frame_3; imageIds[3] = R.drawable.loader_frame_4; imageIds[4] = R.drawable.loader_frame_5; imageIds[5] = R.drawable.loader_frame_6; main_imageview.setImageIds(imageIds); }} |
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<?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" android:background="#e1e1e1"> <wht.android.loading.LoadingView android:layout_gravity="center_horizontal" android:layout_height="wrap_content" android:id="@+id/main_imageview" android:src="@drawable/loader_frame_1" android:layout_marginTop="190dp" android:layout_width="wrap_content" ></wht.android.loading.LoadingView><TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="启动中..." android:layout_marginTop="10dip" android:textColor="#666666" android:layout_gravity="center_horizontal" android:textSize="20sp"/></LinearLayout> |