自定义AlertDialog

我不是女神ヾ 2022-06-09 06:12 224阅读 0赞

# 自定义AlertDialog #

先上效果图

![图片][59a52e366b257.jpg]

> 这是我自定义的背景透明的,可全局使用的,有动画的AlertDialog

使用方法:

*  定义:loadingProgressDialog = new LoadingProgressDialog(this, “正在加载中…”, R.drawable.animation\_loading);
 *  显示:loadingProgressDialog.show();
 *  隐藏:loadingProgressDialog.dismiss();

源码如下:

public class LoadingProgressDialog extends AlertDialog { 
            /** * 动画的资源文件 */
            private int mResId;
            /** * 对话框的标题 */
            private String mLoadingTitle;
            private Context mContext;
            /** * 显示图片 */
            private ImageView mImage;
            /** * 显示标题 */
            private TextView mContent;
            /** * 动画 */
            private AnimationDrawable mAnimation;
    
            public LoadingProgressDialog(Context context) {
                super(context);
            }
    
            public LoadingProgressDialog(Context context, int theme) {
                super(context, theme);
            }
    
            public LoadingProgressDialog(@NonNull Context context, boolean cancelable, @Nullable
                    OnCancelListener cancelListener) {
                super(context, cancelable, cancelListener);
            }
    
            /** * 构造方法 * * @param context Context * @param content 标题 * @param resId 动画资源 */
            public LoadingProgressDialog(Context context, String content, int resId) {
                super(context,R.style.loadingDialog);
                this.mContext = context;
                this.mLoadingTitle = content;
                this.mResId = resId;
            }
    
            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
    
                initView();
                initData();
            }
    
            private void initView() {
                setContentView(R.layout.layout_loading);
                mImage = (ImageView) findViewById(R.id.iv_loading);
                mContent = (TextView) findViewById(R.id.tv_loading);
    
                //点击其他地方不能取消
                setCanceledOnTouchOutside(false);
    
                //设置对话框的宽度为屏幕宽度的一般
                Window window = getWindow();
                if (window != null) {
                    WindowManager.LayoutParams attributes = window.getAttributes();
                    attributes.width = DevicesUtil.getDeviceWidth(mContext).widthPixels / 2;
                    window.setAttributes(attributes);
                }
            }
    
            private void initData() {
                //设置图片的资源
                mImage.setBackgroundResource(mResId);
                //获取图片背景
                mAnimation = (AnimationDrawable) mImage.getBackground();
                mImage.post(new Runnable() {
                    @Override
                    public void run() {
                        mAnimation.start();
                    }
                });
                //设置标题
                mContent.setText(mLoadingTitle);
            }
        }

## 自定义的步骤 ##

1.  设置布局
2.  设置宽高
3.  设置控件上的内容
4.  设置图片的动画

**附动画源码:**

<?xml version="1.0" encoding="utf-8"?>
        <animation-list xmlns:android="http://schemas.android.com/apk/res/android">
    
            <item android:drawable="@drawable/loading1" android:duration="100"/>
            <item android:drawable="@drawable/loading2" android:duration="100"/>
            <item android:drawable="@drawable/loading3" android:duration="100"/>
            <item android:drawable="@drawable/loading4" android:duration="100"/>
    
        </animation-list>

[59a52e366b257.jpg]: https://i.loli.net/2017/08/29/59a52e366b257.jpg