Android手机卫士(一)
闪屏页面的开发
效果图
闪屏页面布局
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@mipmap/splash"> <TextView android:id="@+id/center" android:layout_width="0dp" android:layout_height="0dp" android:layout_centerInParent="true" /> <TextView android:id="@+id/tv_version" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/center" android:layout_centerHorizontal="true" android:layout_marginTop="44dp" android:shadowColor="#f00" android:shadowDx="1" android:shadowDy="1" android:shadowRadius="1" android:text="版本1.0" /> <ProgressBar android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@id/tv_version" android:layout_centerHorizontal="true" /> <TextView android:id="@+id/tv_progress" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_margin="5dp" android:text="下载:10%" android:textColor="#f00" android:visibility="gone" /> </RelativeLayout>
Java代码
package com.ztjc.mobilesafe.activity;
import android.app.Activity;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AlertDialog;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.ztjc.mobilesafe.R;
import com.ztjc.mobilesafe.util.StreamUtil;
import org.json.JSONException;
import org.json.JSONObject;
import java.io.File;
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
/**
* Android手机卫士，闪屏页面
*/
public class SplashActivity extends Activity {
private static final int CODE_UPDATE_DIALOG = 1; // 更新对话框
private static final int CODE_ENTER_HOME = 2; // 进入主页面
private static final int CODE_URL_ERROR = 3; // url错误
private static final int CODE_NET_ERROR = 4; // 网络错误
private static final int CODE_JSON_ERROR = 5; // json解析错误
private TextView tvVersion;
private TextView tvProgress;
private String mVersionName; // 版本名
private int mVersionCode; // 版本号
private String mDesc; // 版本描述
private String mDownload; // 下载地址
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case CODE_UPDATE_DIALOG:
showUploadDialog();
break;
case CODE_ENTER_HOME:
enterHome();
break;
case CODE_URL_ERROR:
Toast.makeText(SplashActivity.this, "url错误", Toast.LENGTH_SHORT).show();
enterHome();
break;
case CODE_NET_ERROR:
Toast.makeText(SplashActivity.this, "网络错误", Toast.LENGTH_SHORT).show();
enterHome();
break;
case CODE_JSON_ERROR:
Toast.makeText(SplashActivity.this, "数据解析错误", Toast.LENGTH_SHORT).show();
enterHome();
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_splash);
tvVersion = (TextView) findViewById(R.id.tv_version);
tvProgress = (TextView) findViewById(R.id.tv_progress);
tvVersion.setText("版本:" + getVersionName());
checkVersion();
}
/**
* 获取版本名称
*
* @return
*/
public String getVersionName() {
PackageManager packageManager = getPackageManager();
try {
PackageInfo packageInfo = packageManager.getPackageInfo(getPackageName(), 0);
return packageInfo.versionName;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return "";
}
/**
* 获取版本号
*
* @return
*/
public int getVersioinCode() {
PackageManager packageManager = getPackageManager();
try {
PackageInfo packageInfo = packageManager.getPackageInfo(getPackageName(), 0);
return packageInfo.versionCode;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return -1;
}
/**
* 检测服务器版本
*/
private void checkVersion() {
final long startTime = System.currentTimeMillis();
// 启动子线程异步加载数据
new Thread() {
@Override
public void run() {
Message message = Message.obtain();
HttpURLConnection connection = null;
try {
URL url = new URL("http://192.168.1.105:8080/json/mobilesafe.json");
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
if (connection.getResponseCode() == 200) {
// 请求成功 获取服务器返回的json
String result = StreamUtil.decodeToString(connection.getInputStream());
// 使用jsonObject解析json，json的解析有多种方式（fastjson、gson、jsonObject等，先实现功能）
JSONObject jsonObject = new JSONObject(result);
mVersionName = jsonObject.getString("versionName");
mDesc = jsonObject.getString("description");
mDownload = jsonObject.getString("downLoadUrl");
mVersionCode = jsonObject.getInt("versionCode");
// 判断服务器和本地版本
if (mVersionCode > getVersioinCode()) {
// 服务器版本大于本地版本，弹出更新提示
message.what = CODE_UPDATE_DIALOG;
} else {
// 没有版本更新，直接进入主页面
message.what = CODE_ENTER_HOME;
}
}
} catch (MalformedURLException e) {
// URL错误
message.what = CODE_URL_ERROR;
e.printStackTrace();
} catch (IOException e) {
// 网络错误
message.what = CODE_NET_ERROR;
e.printStackTrace();
} catch (JSONException e) {
// json解析失败
message.what = CODE_JSON_ERROR;
e.printStackTrace();
} finally {
if (connection != null) {
connection.disconnect(); // 关闭网络连接
}
long endTime = System.currentTimeMillis();
long useTime = endTime - startTime; // 总共花费的时间
if (useTime < 2000) {
// 强制休眠一段时间，保证闪屏在2秒以上
try {
Thread.sleep(2000 - useTime);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
mHandler.sendMessage(message);
}
}
}.start();
}
/**
* 升级对话框
*/
private void showUploadDialog() {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("最新版本:" + mVersionName);
builder.setMessage(mDesc);
builder.setPositiveButton("立即更新", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
donwload();
}
});
builder.setNegativeButton("以后再说", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
enterHome();
}
});
// 设置取消监听，用户点击返回键时触发
builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
enterHome();
}
});
builder.show();
}
/**
* 下载
*/
private void donwload() {
// 判断sd卡是否可用
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
tvProgress.setVisibility(View.VISIBLE);
String target = Environment.getExternalStorageDirectory() + "/update.apk";
// Xutils下载
HttpUtils utils = new HttpUtils();
utils.download(mDownload, target, new RequestCallBack<File>() {
// 下载文件进度
@Override
public void onLoading(long total, long current, boolean isUploading) {
super.onLoading(total, current, isUploading);
tvProgress.setText("下载进度" + current * 100 / total + "%");
}
// 下载成功
@Override
public void onSuccess(ResponseInfo<File> responseInfo) {
// 安装应用
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(responseInfo.result), "application/vnd.android.package-archive");
startActivityForResult(intent, 0); // 如果用户点击取消，会调用onActivityResult方法
}
// 下载失败
@Override
public void onFailure(HttpException error, String msg) {
Toast.makeText(SplashActivity.this, "下载失败", Toast.LENGTH_SHORT).show();
}
});
} else {
Toast.makeText(this, "没找到SD卡", Toast.LENGTH_SHORT).show();
}
}
// 如果用户取消安装进入主页面
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
enterHome();
}
/**
* 进入主页面
*/
private void enterHome() {
startActivity(new Intent(this, HomeActivity.class));
finish();
}
}
工具类代码
package com.ztjc.mobilesafe.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
/**
* 流工具类
*/
public class StreamUtil {
/**
* 把流解析成字符串
* @param inputStream
* @return
* @throws IOException
*/
public static String decodeToString(InputStream inputStream) throws IOException {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
byte[] b = new byte[1024];
int len = 0;
while ((len = inputStream.read(b)) != -1) {
outputStream.write(b, 0, len);
}
return new String(outputStream.toByteArray());
}
}
2. 主界面开发
效果图
主界面布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:layout_width="match_parent" android:layout_height="50dp" android:background="#8866ff00" android:gravity="center" android:text="功能列表" android:textColor="@color/black" android:textSize="22sp" /> <com.ztjc.mobilesafe.view.FocusedTextView android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="5dp" android:layout_marginTop="5dp" android:ellipsize="marquee" android:singleLine="true" android:text="有了手机卫士，腰不酸了，腿部疼痛了，走路也有劲了，手机卫士太牛逼了" android:textColor="@color/black" android:textSize="18sp" /> <GridView android:id="@+id/gv_home" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:numColumns="3" android:verticalSpacing="20dp" /> </LinearLayout>
菜单项GridView子项布局
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:gravity="center" android:orientation="vertical"> <ImageView android:id="@+id/iv_item" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@mipmap/home_apps" /> <TextView android:id="@+id/tv_item" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="5dp" android:text="手机防盗" android:textColor="@color/black" android:textSize="18sp" /> </LinearLayout>
Java代码
package com.ztjc.mobilesafe.activity;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import com.ztjc.mobilesafe.R;
/**
* Android手机卫士，主页面
*/
public class HomeActivity extends Activity {
private GridView gridView;
private String[] mImtes = {"手机防盗", "通讯卫士", "软件管理", "进程管理", "流量统计", "手机杀毒", "缓存清理", "高级工具", "设置中心"};
private int[] mPic = {R.mipmap.home_safe, R.mipmap.home_callmsgsafe, R.mipmap.home_apps,
R.mipmap.home_taskmanager, R.mipmap.home_netmanager, R.mipmap.home_trojan,
R.mipmap.home_sysoptimize, R.mipmap.home_tools, R.mipmap.home_settings};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
gridView = (GridView) findViewById(R.id.gv_home);
gridView.setAdapter(new HomeAdapter());
}
/**
* 主功能菜单适配器
*/
class HomeAdapter extends BaseAdapter {
@Override
public int getCount() {
return mImtes.length;
}
@Override
public Object getItem(int position) {
return mImtes[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder = null;
if (convertView == null) {
viewHolder = new ViewHolder();
convertView = View.inflate(HomeActivity.this, R.layout.home_list_item, null);
viewHolder.ivItem = (ImageView) convertView.findViewById(R.id.iv_item);
viewHolder.tvItem = (TextView) convertView.findViewById(R.id.tv_item);
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
viewHolder.ivItem.setImageResource(mPic[position]);
viewHolder.tvItem.setText(mImtes[position]);
return convertView;
}
class ViewHolder {
ImageView ivItem;
TextView tvItem;
}
}
}
自定义TextView代码，主要是获取焦点
package com.ztjc.mobilesafe.view;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.TextView;
/**
* 获取焦点的TextView
*/
public class FocusedTextView extends TextView {
public FocusedTextView(Context context) {
super(context);
}
public FocusedTextView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public FocusedTextView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
public boolean isFocused() {
return true;
}
}