Rename ActivityHelper to AppHelper

app/src/main/java/com/hippo/util/AppHelper.java

@@ -0,0 +1,89 @@
+/*
+ * Copyright 2015 Hippo Seven
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.hippo.util;
+
+import android.app.Activity;
+import android.app.Service;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.view.View;
+import android.view.inputmethod.InputMethodManager;
+import android.widget.Toast;
+
+import com.hippo.ehviewer.R;
+
+public class AppHelper {
+
+    public static boolean sendEmail(@NonNull Activity from, @NonNull String address,
+            @Nullable String subject, @Nullable String text) {
+        Intent i = new Intent(Intent.ACTION_SENDTO);
+        i.setData(Uri.parse("mailto:" + address));
+        if (subject != null) {
+            i.putExtra(Intent.EXTRA_SUBJECT, subject);
+        }
+        if (text != null) {
+            i.putExtra(Intent.EXTRA_TEXT, text);
+        }
+
+        try {
+            from.startActivity(i);
+            return true;
+        } catch (ActivityNotFoundException e) {
+            Toast.makeText(from, R.string.error_cant_find_activity, Toast.LENGTH_SHORT).show();
+            return false;
+        }
+    }
+
+    public static boolean share(@NonNull Activity from, String text) {
+        Intent sendIntent = new Intent();
+        sendIntent.setAction(Intent.ACTION_SEND);
+        sendIntent.putExtra(Intent.EXTRA_TEXT, text);
+        sendIntent.setType("text/plain");
+
+        try {
+            from.startActivity(sendIntent);
+            return true;
+        } catch (ActivityNotFoundException e) {
+            Toast.makeText(from, R.string.error_cant_find_activity, Toast.LENGTH_SHORT).show();
+            return false;
+        }
+    }
+
+    public static void showSoftInput(Context context, View view) {
+        showSoftInput(context, view, true);
+    }
+
+    public static void showSoftInput(Context context, View view, boolean requestFocus) {
+        if (requestFocus) {
+            view.requestFocus();
+        }
+        InputMethodManager imm = (InputMethodManager) context.getSystemService(Service.INPUT_METHOD_SERVICE);
+        imm.showSoftInput(view, 0);
+    }
+
+    public static void hideSoftInput(Activity activity) {
+        View view = activity.getCurrentFocus();
+        if (view != null) {
+            InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
+            imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
+        }
+    }
+}