Android Loading Control

Android Loading Control

• res/anim/rotate_anim.xml

<?xml version="1.0" encoding="utf-8"?>

<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"

    android:drawable="@drawable/img_loading"

    android:pivotX="50%"

    android:pivotY="50%" />

• res/drawable/loading_anim.xml

<?xml version="1.0" encoding="utf-8"?>

<animation-list xmlns:android="http://schemas.android.com/apk/res/android"

    android:oneshot="false" >

    <item

        android:drawable="@drawable/img1"

        android:duration="200"/>

    <item

        android:drawable="@drawable/img2"

        android:duration="200"/>

    <item

        android:drawable="@drawable/img3"

        android:duration="200"/>

</animation-list>

• Add 4 Images in drawable

• activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@android:color/white"

    android:orientation="vertical"

    android:padding="10dp"

    tools:context=".MainActivity" >

    <ProgressBar

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_margin="10dp"

        android:indeterminateDrawable="@anim/rotate_anim"

        android:padding="10dp" >

    </ProgressBar>

    <TextView

        android:id="@+id/txtmessage"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/Pleasewait" />

    <Button

        android:id="@+id/btnOpenLoadingDialog"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_marginTop="10dp"

        android:text="@string/OpenLoadingDialog" />

</LinearLayout>

• loading_dialog.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:gravity="center_vertical|center_horizontal"

    android:orientation="horizontal"

    android:padding="15dp" >

    <ImageView

        android:id="@+id/ImgLoading"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:src="@drawable/loading_anim" />

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="@string/ClickBacktoClose"

        android:textColor="@android:color/darker_gray"

        android:textStyle="bold" />

</LinearLayout>

• values/string.xml

    <string name="OpenLoadingDialog">Open Loading Dialog</string>

    <string name="ClickBacktoClose">Click Back to Close</string>

    <string name="Pleasewait">Please wait &#8230;</string>

• values/style.xml

  <style name="MyLoadingDialog" parent="@android:Theme.Dialog">

        <item name="android:windowIsFloating">true</item>

        <item name="android:backgroundDimEnabled">true</item>

        <item name="android:windowBackground">@android:drawable/dialog_frame</item>

        <item name="android:windowNoTitle">true</item>

        <item name="android:windowContentOverlay">@null</item>

  

  </style>

• MainActivity.java

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);

Button btnOpenLoadingDialog = (Button) findViewById(R.id.btnOpenLoadingDialog);

btnOpenLoadingDialog.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View v) {

Intent intent = new Intent(getApplicationContext(),

LoadingView_Dialog.class);

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

startActivity(intent); } }); }

        // on Back Pressed

@Override public void onBackPressed() { LoadingView_Dialog.getInstance().finish(); return; }}

• LoadingView_Dialog.java

public class LoadingView_Dialog extends Activity {

static LoadingView_Dialog loadingView_Dialog_Activity;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.loading_dialog);

loadingView_Dialog_Activity = this;

ImageView ImgLoading = (ImageView) findViewById(R.id.ImgLoading);

final AnimationDrawable myAnimationDrawable = (AnimationDrawable) ImgLoading.getDrawable();

                 ImgLoading.post(new Runnable() {

@Override

public void run() {

myAnimationDrawable.start();

}

});

}

public static LoadingView_Dialog getInstance() {

return loadingView_Dialog_Activity;

}

}

• AndroidManifest.xml

       <activity

            android:name=".LoadingView_Dialog"

            android:theme="@style/MyLoadingDialog" >

        </activity>