java 做吐司
Posted
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了java 做吐司相关的知识,希望对你有一定的参考价值。
/*
* Copyright (C) 2016 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 com.example.android.datafrominternet;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private EditText mSearchBoxEditText;
private TextView mUrlDisplayTextView;
private TextView mSearchResultsTextView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSearchBoxEditText = (EditText) findViewById(R.id.et_search_box);
mUrlDisplayTextView = (TextView) findViewById(R.id.tv_url_display);
mSearchResultsTextView = (TextView) findViewById(R.id.tv_github_search_results_json);
}
// COMPLETED (8) Override onCreateOptionsMenu
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// COMPLETED (9) Within onCreateOptionsMenu, use getMenuInflater().inflate to inflate the menu
getMenuInflater().inflate(R.menu.main, menu);
// COMPLETED (10) Return true to display your menu
return true;
}
// COMPLETED (11) Override onOptionsItemSelected
// COMPLETED (12) Within onOptionsItemSelected, get the ID of the item that was selected
// COMPLETED (13) If the item's ID is R.id.action_search, show a Toast and return true to tell Android that you've handled this menu click
// COMPLETED (14) Don't forgot to call .show() on your Toast
// COMPLETED (15) If you do NOT handle the menu click, return super.onOptionsItemSelected to let Android handle the menu click
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int itemThatWasClickedId = item.getItemId();
if (itemThatWasClickedId == R.id.action_search) {
Context context = MainActivity.this;
String textToShow = "Search clicked";
Toast.makeText(context, textToShow, Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
}
Context context = MainActivity.this;
String message = "Search Clicked"
Toast.makeText(context, message, Toast.LENGTH_LONG).show();
以上是关于java 做吐司的主要内容,如果未能解决你的问题,请参考以下文章