Custom Progress Dialog With Squre Image Rotation With AsynTask

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

标签

android

animation

android-asynctask

progressdialog