add: promise support; fix: dialogs and setClip ANR on ui thread;

app/src/main/assets/sample/对话框/UI模式下使用对话框.js

@@ -0,0 +1,70 @@
+"ui";
+
+ui.layout(
+    <vertical>
+        <button id="callback" align="center">回调形式</button>
+        <button id="promise" align="center">Promise形式</button>
+        <button id="calc" align="center">简单计算器</button>
+    </vertical>
+);
+
+ui.callback.click(()=>{
+    dialogs.confirm("要弹出输入框吗?", "", function(b){
+        if(b){
+            dialogs.rawInput("输入", "", function(str){
+                alert("您输入的是:" + str);
+            });
+        }else{
+            ui.finish();
+        }
+    });
+});
+
+ui.promise.click(()=>{
+    dialogs.confirm("要弹出输入框吗")
+        .then(function(b){
+            if(b){
+               return dialogs.rawInput("输入");
+            }else{
+                ui.finish();
+            }
+        }).then(function(str){
+            alert("您输入的是:" + str);
+        });
+});
+
+
+ui.calc.click(()=>{
+    let num1, num2, op;
+    dialogs.input("请输入第一个数字")
+        .then(n => {
+            num1 = n;
+            return dialogs.singleChoice("请选择运算", ["加", "减", "乘", "除", "幂"]);
+        })
+        .then(o => {
+            op = o;
+            return dialogs.input("请输入第二个数字");
+         })
+        .then(n => {
+            num2 = n;
+            var result;
+            switch(op){
+                case 0:
+                    result = num1 + num2;
+                    break;
+                case 1:
+                    result = num1 - num2;
+                    break;
+                case 2:
+                    result = num1 * num2;
+                    break;
+                case 3:
+                    result = num1 / num2;
+                    break;
+                case 4:
+                    result = Math.pow(num1, num2);
+                    break;
+            }
+            alert("运算结果", result);
+        });
+});