Java tutorial
/* * Copyright 2010 Renren, Inc. * * 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.renren.api.connect.android.view; import org.apache.http.util.EncodingUtils; import android.app.Dialog; import android.app.ProgressDialog; import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.Color; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Bundle; import android.util.Log; import android.view.Display; import android.view.Gravity; import android.view.KeyEvent; import android.view.ViewGroup; import android.view.Window; import android.webkit.WebView; import android.webkit.WebViewClient; import android.widget.FrameLayout; import android.widget.LinearLayout; import android.widget.TextView; import com.renren.api.connect.android.R; import com.renren.api.connect.android.Renren; /** * Dialog???? * * @author yong.li@opi-corp.com * */ public class RenrenDialog extends Dialog { private static final String LOG_TAG = "RenrenDialog"; private static final int RENREN_BLUE = 0xFF005EAC; private static final float[] DIMENSIONS_LANDSCAPE = { 460, 260 }; private static final float[] DIMENSIONS_PORTRAIT = { 280, 420 }; /** * ??? */ private static final String CODE_AUTH_CANCEL = "login_denied"; protected String mUrl; protected RenrenDialogListener mListener; private ProgressDialog progress; protected WebView webView; private LinearLayout content; private TextView title; private boolean showTitle = false; private String mPostData; private boolean isPost = false; public RenrenDialog(Context context, String url, RenrenDialogListener listener) { this(context, url, listener, false); } /** * post? * @param context * @param url * @param postDatas post? * @param listener */ public RenrenDialog(Context context, String url, String postDatas, RenrenDialogListener listener) { this(context, url, listener); mPostData = postDatas; isPost = true; } public RenrenDialog(Context context, String url, RenrenDialogListener listener, boolean showTitle) { super(context); mUrl = url; mListener = listener; this.showTitle = showTitle; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); progress = new ProgressDialog(getContext()); progress.requestWindowFeature(Window.FEATURE_NO_TITLE); progress.setMessage("Loading..."); content = new LinearLayout(getContext()); content.setOrientation(LinearLayout.VERTICAL); requestWindowFeature(Window.FEATURE_NO_TITLE); if (this.showTitle) { setUpTitle(); } setUpWebView(); Display display = getWindow().getWindowManager().getDefaultDisplay(); float scale = getContext().getResources().getDisplayMetrics().density; float[] dimensions = display.getWidth() < display.getHeight() ? DIMENSIONS_PORTRAIT : DIMENSIONS_LANDSCAPE; addContentView(content, new FrameLayout.LayoutParams((int) (dimensions[0] * scale + 0.5f), (int) (dimensions[1] * scale + 0.5f))); } private void setUpTitle() { Drawable icon = getContext().getResources().getDrawable(R.drawable.renren_sdk_android_title_logo); title = new TextView(getContext()); title.setText(""); title.setTextColor(Color.WHITE); title.setGravity(Gravity.CENTER_VERTICAL); title.setTypeface(Typeface.DEFAULT_BOLD); title.setBackgroundColor(RENREN_BLUE); title.setBackgroundResource(R.drawable.renren_sdk_android_title_bg); title.setCompoundDrawablePadding(6); title.setCompoundDrawablesWithIntrinsicBounds(icon, null, null, null); content.addView(title); } private void setUpWebView() { webView = new WebView(getContext()); webView.setVerticalScrollBarEnabled(false); webView.setHorizontalScrollBarEnabled(false); webView.getSettings().setJavaScriptEnabled(true); webView.setWebViewClient(new RenrenDialog.RenrenWebViewClient()); if (isPost) { webView.postUrl(mUrl, EncodingUtils.getBytes(mPostData, "BASE64")); } else { webView.loadUrl(mUrl); } FrameLayout.LayoutParams fill = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT); webView.setLayoutParams(fill); content.addView(webView); } /** * Reponse on the Back key click to close the authrization dialog and send * back the Cancel message Added by Shaofeng Wang * (shaofeng.wang@renren-inc.com) */ @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { if (webView != null) { webView.stopLoading(); } if (progress != null) { progress.dismiss(); } RenrenDialog.this.dismiss(); mListener.onPageBegin(Renren.DEFAULT_REDIRECT_URI + "?error=" + CODE_AUTH_CANCEL); this.cancel(); } return super.onKeyDown(keyCode, event); } private class RenrenWebViewClient extends WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { Log.d(LOG_TAG, "Redirect URL: " + url); int b = mListener.onPageBegin(url); switch (b) { case RenrenDialogListener.ACTION_PROCCESSED: RenrenDialog.this.dismiss(); return true; case RenrenDialogListener.ACTION_DIALOG_PROCCESS: return false; } getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url))); return true; } @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { Log.d(LOG_TAG, "Webview loading URL: " + url); boolean b = mListener.onPageStart(url); if (b) { view.stopLoading(); RenrenDialog.this.dismiss(); return; } super.onPageStarted(view, url, favicon); progress.show(); } @Override public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) { super.onReceivedError(view, errorCode, description, failingUrl); mListener.onReceivedError(errorCode, description, failingUrl); progress.hide(); RenrenDialog.this.dismiss(); } @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); mListener.onPageFinished(url); if (showTitle) { String t = view.getTitle(); if (t != null && t.length() > 0) { title.setText(t); } } progress.hide(); } } @Override protected void onStop() { super.onStop(); if (progress != null) { progress.dismiss(); } } }