add: about page, settings, notification switch

app/src/main/java/com/stardust/scriptdroid/tool/BackPressedHandler.java

@@ -0,0 +1,40 @@
+package com.stardust.scriptdroid.tool;
+
+import android.app.Activity;
+import android.widget.Toast;
+
+import com.stardust.scriptdroid.R;
+
+/**
+ * Created by Stardust on 2017/2/3.
+ */
+public interface BackPressedHandler {
+
+    void onBackPressed();
+
+    class DoublePressExit implements BackPressedHandler {
+
+        private final Activity mActivity;
+        private long mLastPressedMillis;
+        private long mDoublePressInterval = 1000;
+
+        public DoublePressExit(Activity activity) {
+            mActivity = activity;
+        }
+
+        public DoublePressExit setDoublePressInterval(long doublePressInterval) {
+            mDoublePressInterval = doublePressInterval;
+            return this;
+        }
+
+        @Override
+        public void onBackPressed() {
+            if (System.currentTimeMillis() - mLastPressedMillis < mDoublePressInterval) {
+                mActivity.finish();
+            } else {
+                mLastPressedMillis = System.currentTimeMillis();
+                Toast.makeText(mActivity, R.string.text_press_again_to_exit, Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+}

app/src/main/java/com/stardust/scriptdroid/tool/IntentTool.java

@@ -0,0 +1,48 @@
+package com.stardust.scriptdroid.tool;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.annotation.Nullable;
+
+/**
+ * Intent工具，用于Activity之间的跳转，调起其他应用程序等
+ */
+public class IntentTool {
+
+    public static void goToQQ(Context context, String qq) {
+        try {
+            String url = "mqqwpa://im/chat?chat_type=wpa&uin=" + qq;
+            context.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
+        } catch (Exception exception) {
+            exception.printStackTrace();
+        }
+    }
+
+    public static void goToMail(Context context, String sendTo, @Nullable String title, @Nullable String content) {
+        Uri uri = Uri.parse("mailto:" + sendTo);
+        String[] email = {sendTo};
+        Intent intent = new Intent(Intent.ACTION_SENDTO, uri);
+        intent.putExtra(Intent.EXTRA_CC, email);
+        if (title != null)
+            intent.putExtra(Intent.EXTRA_SUBJECT, title);
+        if (content != null)
+            intent.putExtra(Intent.EXTRA_TEXT, content);
+        context.startActivity(Intent.createChooser(intent, "请选择邮件应用"));
+    }
+
+    public static void goToMail(Context context, String sendTo) {
+        goToMail(context, sendTo, null, null);
+    }
+
+    public static void goToLink(Context context, String link) {
+        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(link));
+        context.startActivity(intent);
+    }
+
+    public static void shareText(Context context, String text) {
+        context.startActivity(new Intent(Intent.ACTION_SEND)
+                .putExtra(Intent.EXTRA_TEXT, text)
+                .setType("text/plain"));
+    }
+}