Java tutorial
/* * Copyright (C) 2015 The Android Open Source Project * * 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 org.awesomeapp.messenger.ui; import android.Manifest; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.content.res.AssetManager; import android.graphics.Typeface; import android.graphics.drawable.ColorDrawable; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.os.Environment; import android.preference.PreferenceManager; import android.provider.MediaStore; import android.support.design.widget.FloatingActionButton; import android.support.design.widget.Snackbar; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.support.v4.view.ViewPager; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.TextView; import android.widget.Toast; import org.apache.commons.io.IOUtils; import org.awesomeapp.messenger.ImApp; import org.awesomeapp.messenger.provider.Imps; import org.awesomeapp.messenger.ui.stickers.Sticker; import org.awesomeapp.messenger.ui.stickers.StickerGroup; import org.awesomeapp.messenger.ui.stickers.StickerManager; import org.awesomeapp.messenger.ui.stickers.StickerPagerAdapter; import org.awesomeapp.messenger.ui.stickers.StickerSelectListener; import org.awesomeapp.messenger.util.SecureMediaStore; import org.awesomeapp.messenger.util.SystemServices; import org.ironrabbit.type.CustomTypefaceManager; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Collection; import java.util.Date; import java.util.UUID; import im.zom.messenger.R; import info.guardianproject.iocipher.FileInputStream; public class StickerActivity extends BaseActivity { private ImApp mApp; private ViewPager mStickerPager; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.awesome_activity_stickers); setTitle(R.string.action_stickers); Intent intent = getIntent(); mApp = (ImApp) getApplication(); getSupportActionBar().setDisplayHomeAsUpEnabled(true); mStickerPager = (ViewPager) findViewById(R.id.stickerPager); applyStyleForToolbar(); initStickers(); } public void applyStyleForToolbar() { //not set color final SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this); int selColor = settings.getInt("themeColor", -1); if (selColor != -1) { if (Build.VERSION.SDK_INT >= 21) { getWindow().setNavigationBarColor(selColor); getWindow().setStatusBarColor(selColor); } getSupportActionBar().setBackgroundDrawable(new ColorDrawable(selColor)); } } private void initStickers() { Collection<StickerGroup> emojiGroups = StickerManager.getInstance(this).getEmojiGroups(); if (emojiGroups.size() > 0) { StickerPagerAdapter emojiPagerAdapter = new StickerPagerAdapter(this, new ArrayList<StickerGroup>(emojiGroups), new StickerSelectListener() { @Override public void onStickerSelected(Sticker s) { exportAsset(s.assetUri, s.name); } }); mStickerPager.setAdapter(emojiPagerAdapter); } } private final static int MY_PERMISSIONS_REQUEST_FILE = 1; private boolean checkPermissions() { int permissionCheck = ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE); if (permissionCheck == PackageManager.PERMISSION_DENIED) { // Should we show an explanation? if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_EXTERNAL_STORAGE)) { // Show an expanation to the user *asynchronously* -- don't block // this thread waiting for the user's response! After the user // sees the explanation, try again to request the permission. Snackbar.make(mStickerPager, R.string.grant_perms, Snackbar.LENGTH_LONG).show(); } else { // No explanation needed, we can request the permission. ActivityCompat.requestPermissions(this, new String[] { Manifest.permission.WRITE_EXTERNAL_STORAGE }, MY_PERMISSIONS_REQUEST_FILE); // MY_PERMISSIONS_REQUEST_READ_CONTACTS is an // app-defined int constant. The callback method gets the // result of the request. } return false; } else { return true; } } private void exportAsset(Uri mediaUri, String name) { if (checkPermissions()) { try { String mimeType = "image/png"; java.io.File exportPath = new File(Environment.getExternalStorageDirectory(), name + ".png"); java.io.InputStream fis = getResources().getAssets().open(mediaUri.getPath()); java.io.FileOutputStream fos = new java.io.FileOutputStream(exportPath, false); IOUtils.copyLarge(fis, fos); fos.close(); fis.close(); Intent shareIntent = new Intent(); shareIntent.setAction(Intent.ACTION_SEND); shareIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(exportPath)); shareIntent.setType(mimeType); startActivity(Intent.createChooser(shareIntent, getResources().getText(R.string.export_media))); } catch (IOException e) { Toast.makeText(this, "Export Failed " + e.getMessage(), Toast.LENGTH_LONG).show(); e.printStackTrace(); } } } @Override protected void onResume() { super.onResume(); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: finish(); return true; } return super.onOptionsItemSelected(item); } @Override public boolean onCreateOptionsMenu(Menu menu) { // getMenuInflater().inflate(R.menu.menu_conversation_detail, menu); return true; } @Override public void onSaveInstanceState(Bundle savedInstanceState) { super.onSaveInstanceState(savedInstanceState); } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); } }