AlertDialog 自定义

一个自定义加载框，资源布局如下

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <corners android:radius="10dp"/>    <solid android:color="#333"/></shape>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <corners android:radius="10dp" />    <solid android:color="#aaa"/>    <size android:height="10dp"        android:width="10dp"/></shape>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle">    <corners android:radius="10dp" />    <solid android:color="#fff"/>    <size android:height="10dp"        android:width="10dp"/></shape>

import android.app.AlertDialog;import android.app.Dialog;import android.content.Context;import android.content.DialogInterface;import android.graphics.Bitmap;import android.graphics.Color;import android.graphics.drawable.ColorDrawable;import android.graphics.drawable.Drawable;import android.os.Handler;import android.os.Message;import android.provider.Settings;import android.util.Log;import android.util.TypedValue;import android.view.LayoutInflater;import android.view.View;import android.view.WindowManager;/** * Created by Administrator on 2016/5/18. */public class LoaddingDialog {    String TAG = "LoaddingDialog";    private AlertDialog dialog;    private View[] indictors;    private int indictorCount = 3;    private int current = 0;    private boolean running = false;    private Drawable hover;    private Drawable normal;    Handler handler = new Handler(){        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            indictors[0].setBackgroundDrawable(normal);            indictors[1].setBackgroundDrawable(normal);            indictors[2].setBackgroundDrawable(normal);            indictors[msg.what].setBackgroundDrawable(hover);        }    };    public void show(){        dialog.show();        if (running)return;        new Thread(new LoadThread()).start();    }    public void hide(){        running = false;        dialog.dismiss();    }    public LoaddingDialog(Context context) {        init(context, true);    }    public LoaddingDialog(Context context, boolean cancelable){        init(context, cancelable);    }    private void init(Context context, boolean cancelable){        View root = LayoutInflater.from(context).inflate(R.layout.layout_loadding, null);        indictors = new View[indictorCount];        indictors[0] = root.findViewById(R.id.loadding_indictor1);        indictors[1] = root.findViewById(R.id.loadding_indictor2);        indictors[2] = root.findViewById(R.id.loadding_indictor3);        dialog = new AlertDialog.Builder(context)                .setCancelable(cancelable)                .create();        dialog.setView(root);        dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));        dialog.setOnDismissListener(listener);//        dialog.getWindow().setDimAmount(0);        hover = context.getResources().getDrawable(R.drawable.shape_loadding_indictor_hover);        normal = context.getResources().getDrawable(R.drawable.shape_loadding_indictor);    }    DialogInterface.OnDismissListener listener = new DialogInterface.OnDismissListener() {        @Override        public void onDismiss(DialogInterface dialog) {            if (running)                running = false;        }    };    class LoadThread implements Runnable{        @Override        public void run() {            current = 0;            running = true;            long time = System.currentTimeMillis();            Log.e("state", "start----------");            while(running){                if (System.currentTimeMillis() - time < 300){                    continue;                }                time = System.currentTimeMillis();                handler.sendEmptyMessage(current);                current= ++current%3;            }            Log.e("state", "end----------");        }    }}

需要注意的点：

1、能够自定义view的是alertdialog

2、在自定义中需要先create然后再使用getWindow进行样式调整，或者先定义style 直接传入builder 构建函数中

3、使得dialog背景消失，需要使用

dialog.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

4、如果要后面背景（dialog未覆盖的其它部分）黑色变掉，使用<pre name="code" class="java">dialog.getWindow().setDimAmount(0);它的值0~1 0是全透明， 父窗口不受影响