Android手把手撸一个CustomProgressDialog

1.自定义LoadingView

/** * Created by xpf on 2017/8/28 :) * Function:自定义加载中的Dialog */public class LoadingView extends ProgressDialog {    public LoadingView(Context context) {        super(context);    }    public LoadingView(Context context, int theme) {        super(context, theme);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        init(getContext());    }    private void init(Context context) {        setCancelable(true);        setCanceledOnTouchOutside(false);        setContentView(R.layout.loading_view);//loading的xml文件        WindowManager.LayoutParams params = getWindow().getAttributes();        params.width = WindowManager.LayoutParams.WRAP_CONTENT;        params.height = WindowManager.LayoutParams.WRAP_CONTENT;        getWindow().setAttributes(params);    }    @Override    public void show() { // 显示Dialog        super.show();    }    @Override    public void dismiss() { // 关闭Dialog        super.dismiss();    }}

2.LoadingView的布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="200dp"    android:layout_height="200dp"    android:layout_centerInParent="true"    android:layout_gravity="center_horizontal"    android:background="@drawable/shape_dialog_bg"    android:orientation="vertical">    <RelativeLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_marginTop="20dp">        <ProgressBar            android:id="@+id/pb_load"            android:layout_width="130dp"            android:layout_height="130dp"            android:layout_centerInParent="true"            android:indeterminateDrawable="@drawable/progressbar" />    </RelativeLayout>    <TextView        android:id="@+id/tv_load_dialog"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center_horizontal"        android:text="加载中..."        android:textColor="#9a9b98"        android:textSize="24sp" /></LinearLayout>

3.dialog圆角的shape

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android">    <corners android:radius="16dp" />    <solid android:color="#88000000" /></shape>

4.定义drawable旋转动画

<animated-rotate xmlns:android="http://schemas.android.com/apk/res/android"    android:fromDegrees="0"    android:pivotX="50%"    android:pivotY="50%"    android:toDegrees="720">    <shape        android:innerRadiusRatio="3"        android:shape="ring"        android:thicknessRatio="15"        android:useLevel="false">        <gradient            android:centerColor="#c6c6c6"            android:centerY="0.50"            android:endColor="#c6c6c6"            android:startColor="#55c6c6c6"            android:type="sweep"            android:useLevel="false" />    </shape></animated-rotate>

5.定义一个Style

    <style name="CustomDialog" parent="Theme.AppCompat.Dialog">        <item name="android:backgroundDimEnabled">false</item>        <item name="android:windowBackground">@android:color/transparent</item>    </style>

6.代码中使用

        if (loading == null) {            loading = new LoadingView(this, R.style.CustomDialog);            loading.show(); // 显示        }

取消显示：loading.dismiss();

ok~终于完了…