学习自定义加载框

先自定义布局

<?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:id="@+id/load_llt"    android:background="#000000"    android:padding="15dp"    android:gravity="center_horizontal"    android:orientation="vertical" >    <ImageView        android:id="@+id/load_img"        android:layout_width="150dp"        android:layout_height="150dp"        android:adjustViewBounds="true"        android:src="@drawable/load_dialog" />    <TextView        android:id="@+id/load_tv"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="正在加载中......"        android:layout_marginTop="15dp"        android:gravity="center_horizontal"        android:textColor="#FFFFFF"        android:textSize="20sp" /></LinearLayout>

加载的图片是网上随便找的：

设置图片的旋转动画

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"    android:shareInterpolator="false" >    <rotate        android:duration="2000"        android:fromDegrees="0"        android:interpolator="@android:anim/linear_interpolator"        android:pivotX="50%"        android:pivotY="50%"        android:repeatCount="-1"        android:repeatMode="restart"        android:startOffset="-1"        android:toDegrees="+360" >    </rotate></set>

使用

        LayoutInflater layoutInflater = LayoutInflater.from(this);        View view = layoutInflater.inflate(R.layout.my_load_dialog, null);//获取布局        LinearLayout layout = (LinearLayout) view.findViewById(R.id.load_llt);        ImageView imageView = (ImageView) view.findViewById(R.id.load_img);        TextView tView = (TextView) view.findViewById(R.id.load_tv);        Animation animation = AnimationUtils.loadAnimation(this, R.anim.load_anim);        imageView.startAnimation(animation);//加载动画        Dialog loadDialog = new Dialog(this);        loadDialog.setCancelable(true);//使返回键不作用与加载框        loadDialog.setCanceledOnTouchOutside(false);//点击框外框不消失        loadDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);//去除标题栏        loadDialog.setContentView(layout,new LinearLayout.LayoutParams(                LinearLayout.LayoutParams.FILL_PARENT,                LinearLayout.LayoutParams.FILL_PARENT));        loadDialog.show();

自定义样式和封装

    <item name="android:windowFrame">@null</item>        <item name="android:windowNoTitle">true</item>        <item name="android:windowIsFloating">true</item>        <item name="android:windowContentOverlay">@null</item>    </style>

如下封装：

/**     * 显示加载框     * @param context     * @return Dialog     */    public Dialog showLoadDialog(Context context){        return showLoadDialog(context, "");    }    /**     * 显示加载框,更改消息显示     * @param context     * @param showMessage     * @return Dialog     */    public Dialog showLoadDialog(Context context,String showMessage){        LayoutInflater layoutInflater = LayoutInflater.from(this);        View view = layoutInflater.inflate(R.layout.my_load_dialog, null);//获取布局        LinearLayout layout = (LinearLayout) view.findViewById(R.id.load_llt);        ImageView imageView = (ImageView) view.findViewById(R.id.load_img);        TextView tView = (TextView) view.findViewById(R.id.load_tv);        if (!showMessage.equals("")) {            tView.setText(showMessage);        }        Animation animation = AnimationUtils.loadAnimation(context, R.anim.load_anim);        imageView.startAnimation(animation);//加载动画        Dialog loadDialog = new Dialog(context,R.style.loading_dialog);        loadDialog.setCancelable(true);//使返回键不作用与加载框        loadDialog.setCanceledOnTouchOutside(false);//点击框外框不消失        loadDialog.setContentView(layout,new LinearLayout.LayoutParams(                LinearLayout.LayoutParams.FILL_PARENT,                LinearLayout.LayoutParams.FILL_PARENT));        loadDialog.show();        return loadDialog;    }