Android自定义仿ios加载弹窗

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public class IosLoadDialog extends Dialog {

    public IosLoadDialog(Context context) {

        super(context, R.style.loading_dialog);

        initView();

    }

    @Override

    public boolean onKeyDown(int keyCode, KeyEvent event) {

        switch (keyCode){

            case KeyEvent.KEYCODE_BACK:

                if(IosLoadDialog.this.isShowing())

                    IosLoadDialog.this.dismiss();

                break;

        }

        return true;

    }

    private void initView(){

        setContentView(R.layout.dialog_loading);

        Animation animation = AnimationUtils.loadAnimation(getContext(), R.anim.load_animation);

        animation.setInterpolator(new LinearInterpolator());

        findViewById(R.id.loading_dialog_img).startAnimation(animation);

        setCanceledOnTouchOutside(true);

        WindowManager.LayoutParams attributes = getWindow().getAttributes();

        attributes.alpha=0.8f;

        getWindow().setAttributes(attributes);

        setCancelable(false);

    }

}

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14<360>

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

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

    android:id="@+id/dialog_view"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:background="@color/tm"

    android:gravity="center"

    android:minHeight="60dp"

    android:minWidth="180dp"

    android:orientation="vertical"

    android:padding="10dp">

    <LinearLayout

        android:layout_width="80dp"

        android:layout_height="80dp"

        android:background="@drawable/white_radian13"

        android:gravity="center"

        android:orientation="vertical">

        <ImageView

            android:id="@+id/loading_dialog_img"

            android:layout_width="50dp"

            android:layout_height="50dp"

            android:scaleType="fitXY"

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

    </LinearLayout>

</LinearLayout>

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<style name="loading_dialog" parent="android:style/Theme.Dialog">

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

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

        <item name="android:windowBackground">@color/tm</item>

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

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

    </style>

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

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

    <item>

        <shape>

            <solid android:color="#F7FBFD" />

            <corners android:radius="13dp" />

        </shape>

    </item>

</layer-list>

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public void showDialog(){

        final IosLoadDialog iosLoadDialog = new IosLoadDialog(this);

        iosLoadDialog.show();

        new Handler().postDelayed(new Runnable() {

            @Override

            public void run() {

                iosLoadDialog.dismiss();

            }

        },1200);

    }