问题
I have created a custom Loading Progress Dialog. And its working well.
I am rotating 12 square Images here is one of them
But when I want to use it with AsynTask, The animation not working.
My Sample code is below.
Activity Where I Start Loading... Animation and Stop.
MainActivity.java
public class MainActivity extends Activity {
AnimationDrawable loadingViewAnim;
TextView loadigText;
ImageView loadigIcon;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
loadigText = (TextView) findViewById(R.id.textView1);
loadigText.setText("Loading...");
loadigText.setVisibility(View.GONE);
loadigIcon = (ImageView) findViewById(R.id.imageView1);
loadigIcon.setVisibility(View.GONE);
loadigIcon.setBackgroundResource(R.anim.progress_animation_white);
loadingViewAnim = (AnimationDrawable) loadigIcon.getBackground();
}
//When User Touch on Screen The Loading... Animation Starts With Image Rotation
//If I start below code in AsynTask's onPreExecute method it doesn't work
public boolean onTouchEvent(MotionEvent event)
{
loadigText.setVisibility(View.VISIBLE);
loadigIcon.setVisibility(View.VISIBLE);
if (event.getAction() == MotionEvent.ACTION_DOWN)
{
loadingViewAnim.start();
return true;
}
return super.onTouchEvent(event);
}
}
XML layout with Simple Text and Image for Progress Dialog.
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#000000"
android:gravity="center"
android:orientation="vertical" >
<ImageView
android:id="@+id/imageView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/progress_sm_w01" />
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Loading..."
android:textColor="#ffffff"
android:textSize="12sp" />
</LinearLayout>
Animation List having 12 Images I am Rotating with Angle & Time Duration
progress_animation_white.xml
<animation-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@drawable/progress_sm_w01" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w02" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w03" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w04" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w05" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w06" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w07" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w08" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w09" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w10" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w11" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w12" android:duration="50" />
</animation-list>
Here is the result Loading Screen..
My Question is Is there anyway to Achieve the same Loading Animation with AsynTask.
Your Small Help will appreciated.
回答1:
Well thanks to @Brontok and @URAndroid for their help. I got solved my problem. So let me answer my own question, Hoe i achieved that Custom Loading animation
I have added few Image for Image Rotation Animation
Step 1 - in res/drawable folder
- progress_sm_w00.png (Default blank transparent image)
- progress_sm_w01.png (first animtion position)
- progress_sm_w02.png
- progress_sm_w03.png
- progress_sm_w04.png
- progress_sm_w05.png
- progress_sm_w06.png
- progress_sm_w07.png
- progress_sm_w08.png
- progress_sm_w09.png
- progress_sm_w10.png
- progress_sm_w11.png
- progress_sm_w12.png (last animation position).
Example : one of these is below i have added
Step 2 - in res/anim folder created animation file name "loading_animation.xml"
<item android:drawable="@drawable/progress_sm_w01" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w02" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w03" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w04" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w05" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w06" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w07" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w08" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w09" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w10" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w11" android:duration="50" />
<item android:drawable="@drawable/progress_sm_w12" android:duration="50" />
</animation-list>
Step 3 - now created Custom Loading View layout in my Screen (Activity) wherever I need to show loading
example. XML layout for my Facebook login screen
<LinearLayout
android:id="@+id/LinearLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#0D000000"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone" >
<ImageView
android:id="@+id/imageView111"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/progress_sm_w00"
android:visibility="gone" />
<TextView
android:id="@+id/textView111"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="10dp"
android:text="Searching..."
android:textColor="#ffffff"
android:textSize="12sp"
android:visibility="gone" />
</LinearLayout>
Step 4 - In java code (Activity) I created Loading view and after completing OnCreate method I started Asyn Task so my Animation get work properly.
public class ResultActivity extends Activity {
private static final String TAG = "ResultActivity";
private AnimationDrawable loadingViewAnim=null;
private TextView loadigText = null;
private ImageView loadigIcon = null;
private LinearLayout loadingLayout = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_result);
loadingLayout = (LinearLayout)findViewById(R.id.LinearLayout1);
loadingLayout.setVisibility(View.GONE);
loadigText = (TextView) findViewById(R.id.textView111);
loadigText.setVisibility(View.GONE);
loadigIcon = (ImageView) findViewById(R.id.imageView111);
loadigIcon.setVisibility(View.GONE);
loadigIcon.setBackgroundResource(R.anim.loading_animation);
loadingViewAnim = (AnimationDrawable) loadigIcon.getBackground();
// This line is to start Asyn Task only when OnCreate Method get completed, So Loading Icon Rotation Animation work properly
loadigIcon.post(new Starter());
}
class Starter implements Runnable {
public void run() {
//start Asyn Task here
new LongOperation().execute("");
}
}
private class LongOperation extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... params) {
//ToDo your Network Job/Request etc. here
return "Executed";
}
@Override
protected void onPostExecute(String result) {
//ToDo with result you got from Task
//Stop Loading Animation
loadingLayout.setVisibility(View.GONE);
loadigText.setVisibility(View.GONE);
loadigIcon.setVisibility(View.GONE);
loadingViewAnim.stop();
}
@Override
protected void onPreExecute() {
//Start Loading Animation
loadingLayout.setVisibility(View.VISIBLE);
loadigText.setVisibility(View.VISIBLE);
loadigIcon.setVisibility(View.VISIBLE);
loadingViewAnim.start();
}
@Override
protected void onProgressUpdate(Void... values) {}
}
}
Step 5 - Here is the Result Screen with Progress Loading animation.
Hope this will help you. Cheers!!
回答2:
Maybe you can use GLIDE, for example
Glide.with(context)
.load(imageUrl)
.asGif()
.placeholder(R.drawable.loading2)
.crossFade()
.into(imageView);
Show GIF file with Glide (image loading and caching library)
来源：https://stackoverflow.com/questions/19900747/custom-progress-dialog-with-squre-image-rotation-with-asyntask