Java tutorial
/* * Copyright (c) Microsoft. All rights reserved. Licensed under the MIT license. * See LICENSE in the project root for license information. */ package com.microsoft.graph.snippets; import android.annotation.TargetApi; import android.content.ClipData; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.content.ContextCompat; import android.support.v7.app.AppCompatActivity; import android.text.ClipboardManager; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.microsoft.graph.concurrency.ICallback; import com.microsoft.graph.core.ClientException; import com.microsoft.graph.snippets.snippet.AbstractSnippet; import com.microsoft.graph.snippets.snippet.SnippetContent; import java.io.PrintWriter; import java.io.StringWriter; import butterknife.ButterKnife; import butterknife.InjectView; import butterknife.OnClick; import static android.view.View.GONE; import static android.view.View.VISIBLE; import static com.microsoft.graph.snippets.R.color.code_1xx; import static com.microsoft.graph.snippets.R.color.code_3xx; import static com.microsoft.graph.snippets.R.color.code_4xx; import static com.microsoft.graph.snippets.R.id.btn_run; import static com.microsoft.graph.snippets.R.id.progressbar; import static com.microsoft.graph.snippets.R.id.txt_desc; import static com.microsoft.graph.snippets.R.id.txt_hyperlink; import static com.microsoft.graph.snippets.R.id.txt_request_url; import static com.microsoft.graph.snippets.R.id.txt_response_body; import static com.microsoft.graph.snippets.R.id.txt_status_color; import static com.microsoft.graph.snippets.R.string.clippy; import static com.microsoft.graph.snippets.R.string.code_snippet; import static com.microsoft.graph.snippets.R.string.raw_object; public class SnippetDetailFragment<T, Result> extends BaseFragment implements ICallback<Result> { public static final String ARG_ITEM_ID = "item_id"; private static final int UNSET = -1; private static final String STATUS_COLOR = "STATUS_COLOR"; private static final String CONTENT_DESCRIPTION = "CONTENT_DESCRIPTION"; private boolean mIsExecutingRequest = false; private AbstractSnippet<Result> mItem; // // UI component bindings // /** * Displays the status code as color 'stoplight' */ @InjectView(txt_status_color) protected ImageView mStatusColor; /** * On-screen description of the current snippet */ @InjectView(txt_desc) protected TextView mSnippetDescription; /** * The request url of the current snippet */ @InjectView(txt_request_url) protected TextView mRequestUrl; /** * The response body of the snippet's request */ @InjectView(txt_response_body) protected TextView mResponseBody; /** * Barber's pole progress bar (indeterminate) */ @InjectView(progressbar) protected ProgressBar mProgressbar; /** * The 'run-snippet' button */ @InjectView(btn_run) protected Button mRunButton; /** * Fragment default constructor */ public SnippetDetailFragment() { // unimplemented } // // UI event bindings // @OnClick(txt_request_url) public void onRequestUrlClicked(TextView tv) { // copy to clip clipboard(tv); } @OnClick(txt_response_body) public void onResponseBodyClicked(TextView tv) { // copy to clip clipboard(tv); } @OnClick(btn_run) public void onRunClicked(Button btn) { mIsExecutingRequest = true; // disable the button while the snippet is running mRunButton.setEnabled(false); // clear any old response body mResponseBody.setText(""); // reset the status 'stoplight' displayStatus(ContextCompat.getColor(getActivity(), code_3xx), getString(R.string.stoplight_in_progress)); // show the indeterminate spinner mProgressbar.setVisibility(VISIBLE); // actually make the request mItem.request(this); } @OnClick(txt_hyperlink) public void onDocsLinkClicked(TextView textView) { launchUrl(Uri.parse(mItem.getUrl())); } // // Lifecycle hooks // @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); if (getArguments().containsKey(ARG_ITEM_ID)) { mItem = (AbstractSnippet<Result>) SnippetContent.ITEMS.get(getArguments().getInt(ARG_ITEM_ID)); } } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View rootView = inflater.inflate(R.layout.fragment_snippet_detail, container, false); ButterKnife.inject(this, rootView); mSnippetDescription.setText(mItem.getDescription()); mRequestUrl.setText(mItem.getCodeSnippet()); return rootView; } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (null != mStatusColor.getTag()) { outState.putInt(STATUS_COLOR, (Integer) mStatusColor.getTag()); } if (null != mStatusColor.getContentDescription()) { outState.putString(CONTENT_DESCRIPTION, (String) mStatusColor.getContentDescription()); } } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (null != getActivity() && getActivity() instanceof AppCompatActivity) { AppCompatActivity activity = (AppCompatActivity) getActivity(); if (null != activity.getSupportActionBar()) { activity.getSupportActionBar().setTitle(mItem.getName()); } } if (null != savedInstanceState && savedInstanceState.containsKey(STATUS_COLOR) && savedInstanceState.containsKey(CONTENT_DESCRIPTION)) { int statusColor = savedInstanceState.getInt(STATUS_COLOR, UNSET); String contentDescription = savedInstanceState.getString(CONTENT_DESCRIPTION, ""); if (UNSET != statusColor) { displayStatus(statusColor, contentDescription); } } } // // Custom event bindings // @Override public void success(final Result result) { if (!isAdded()) { // the user has left... return; } getActivity().runOnUiThread(new Runnable() { @Override public void run() { mRunButton.setEnabled(true); mProgressbar.setVisibility(GONE); displayStatus(ContextCompat.getColor(getActivity(), code_1xx), getString(R.string.stoplight_success)); Gson gson = new GsonBuilder().setPrettyPrinting().create(); mResponseBody.setText(gson.toJson(result)); mIsExecutingRequest = false; } }); } @Override public void failure(final ClientException error) { getActivity().runOnUiThread(new Runnable() { @Override public void run() { mRunButton.setEnabled(true); mProgressbar.setVisibility(GONE); displayStatus(ContextCompat.getColor(getActivity(), code_4xx), getString(R.string.stoplight_failure)); mResponseBody.setText(error.getLocalizedMessage()); mIsExecutingRequest = false; } }); } public boolean isExecutingRequest() { return mIsExecutingRequest; } // // Private methods // private void clipboard(TextView tv) { // which view are we copying to the clipboard? int which; switch (tv.getId()) { case txt_request_url: // the url field which = code_snippet; break; case txt_response_body: // the response body which = raw_object; break; default: which = UNSET; // don't assign a prefix } // if we know which view we're copying, prefix it with useful info String what = which == UNSET ? "" : getString(which) + " "; // concat the clipboard data to this String what += getString(clippy); // inform the user that data was added to the clipboard Toast.makeText(getActivity(), what, Toast.LENGTH_SHORT).show(); // depending on our API, do it one way or another... if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) { // old way ClipboardManager clipboardManager = (ClipboardManager) getActivity() .getSystemService(Context.CLIPBOARD_SERVICE); clipboardManager.setText(tv.getText()); } else { clipboard11(tv); } } @TargetApi(11) private void clipboard11(TextView tv) { android.content.ClipboardManager clipboardManager = (android.content.ClipboardManager) getActivity() .getSystemService(Context.CLIPBOARD_SERVICE); ClipData clipData = ClipData.newPlainText("RESTSnippets", tv.getText()); clipboardManager.setPrimaryClip(clipData); } private void launchUrl(Uri uri) { Intent viewDocs = new Intent(Intent.ACTION_VIEW, uri); startActivity(viewDocs); } private void displayStatus(int color, String contentDescription) { mStatusColor.setBackgroundColor(color); mStatusColor.setTag(color); mStatusColor.setContentDescription(contentDescription); } private void displayThrowable(Throwable t) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); t.printStackTrace(pw); String trace = sw.toString(); mResponseBody.setText(trace); } }