Android引导页实现后启动页没了,该怎么处理
Android引导页实现后启动页没了
------解决思路----------------------
先用handler.postDelay 让启动页休眠3秒，然后再判断是不是第一次进入即可！
你的休眠写在判断的时候，是不科学的。
------解决思路----------------------
参照下面的代码即可。
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent intent;
//如果第一次，则进入引导页WelcomeActivity
if (first) {
intent = new Intent(MainActivity.this,
WelcomeActivity.class);
} else {
intent = new Intent(MainActivity.this,
HomeActivity.class);
}
startActivity(intent);
// 设置Activity的切换效果
overridePendingTransition(R.anim.in_from_right,
R.anim.out_to_left);
MainActivity.this.finish();
}
}, TIME);
------解决思路----------------------
参照下面的代码即可。
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent intent;
//如果第一次，则进入引导页WelcomeActivity
if (first) {
intent = new Intent(MainActivity.this,
WelcomeActivity.class);
} else {
intent = new Intent(MainActivity.this,
HomeActivity.class);
}
startActivity(intent);
// 设置Activity的切换效果
overridePendingTransition(R.anim.in_from_right,
R.anim.out_to_left);
MainActivity.this.finish();
}
}, TIME);
------解决思路----------------------
可以用sharedpreferences保存一条数据，那条数据标志着是否是第一次登陆。然后每次执行启动页的时候就去取出那条数据，如果那条数据代表第一登陆就跳转到引导页如果不是就跳到首页。
本帖最后由 u014294325 于 2015-06-04 10:22:21 编辑
SplashActivity.java
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.ProgressDialog;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.content.Context;
import java.io.File;
import android.support.v4.view.ViewPager;
import android.os.Environment;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
import android.net.Uri;
import android.view.View;
import android.widget.TextView;
/**
*
* @{# SplashActivity.java Create on 2013-5-2 下午9:10:01
*
* class desc: 启动画面 (1)判断是否是首次加载应用--采取读取SharedPreferences的方法
* (2)是，则进入GuideActivity；否，则进入MainActivity (3)3s后执行(2)操作
*
* <p>
* Copyright: Copyright(c) 2013
* </p>
* @Version 1.0
* @Author <a href="mailto:gaolei_xj@163.com">Leo</a>
*
*
*/
public class SplashActivity extends Activity {
private final int SPLASH_DISPLAY_LENGHT = 3000; // 延迟3秒
private static final int GO_HOME = 1000;
private static final int GO_GUIDE = 1001;
private final int UPDATA_NONEED = 0;
private final int UPDATA_CLIENT = 1;
private final int GET_UNDATAINFO_ERROR = 2;
private final int SDCARD_NOMOUNTED = 3;
private final int DOWN_ERROR = 4;
private static final long SPLASH_DELAY_MILLIS = 3000;
boolean isFirstIn = false;
private static final String SHAREDPREFERENCES_NAME = "first_pref";
/**
* Handler:跳转到不同界面
*/
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case UPDATA_CLIENT:
//对话框通知用户升级程序
downLoadApk();
break;
case DOWN_ERROR:
//下载apk失败
Toast.makeText(getApplicationContext(), "下载新版本失败", Toast.LENGTH_SHORT).show();
break;
// case GO_GUIDE:
// goGuide();
// break;
}
super.handleMessage(msg);
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
// new Handler().postDelayed(new Runnable(){
//
// @Override
init();
//检查网络
if(chkNetwork()){
CheckAppVersion();
}
// else {
// mHandler.sendEmptyMessageDelayed(GO_HOME, 3000);
// }
}
private void init() {
// 读取SharedPreferences中需要的数据
// 使用SharedPreferences来记录程序的使用次数
// SharedPreferences preferences = getSharedPreferences(SHAREDPREFERENCES_NAME, MODE_PRIVATE);
// 取得相应的值，如果没有该值，说明还未写入，用true作为默认值
SharedPreferences preferences = getSharedPreferences(SHAREDPREFERENCES_NAME, Context.MODE_PRIVATE);
isFirstIn = preferences.getBoolean("isFirstIn", true);
if (!isFirstIn) {
Intent intent = new Intent(SplashActivity.this, MyActivity.class);
SplashActivity.this.startActivity(intent);
SplashActivity.this.finish();
} else {
Intent intent = new Intent(SplashActivity.this, GuideActivity.class);
SplashActivity.this.startActivity(intent);
SplashActivity.this.finish();
}
SharedPreferences.Editor editor = preferences.edit();
editor.putBoolean("isFirstIn", false);
// 提交修改
editor.commit();
// 判断程序与第几次运行，如果是第一次运行则跳转到引导界面，否则跳转到主界面
// if (!isFirstIn) {
// // 使用Handler的postDelayed方法，3秒后执行跳转到MainActivity
// mHandler.sendEmptyMessageDelayed(GO_HOME, 5000);
// } else {
// mHandler.sendEmptyMessageDelayed(GO_GUIDE, 3000);
// }
}
//检查网络
public boolean chkNetwork(){
try{
ConnectivityManager connectivityManager = (ConnectivityManager)this.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
if(networkInfo != null && networkInfo.isAvailable()){
return true;
}else{
return false;
}
}catch(Exception e){
return false;
}
}
public void CheckAppVersion(){
try{
getLocalVerInfo();
Thread_getUpdVerInfo chkVer = new Thread_getUpdVerInfo();
chkVer.start();
chkVer.join();
checkVersion();
}catch(Exception e){
//tvMsg.setText(e.getMessage());
}
}
public void getLocalVerInfo(){
try{
UpdateGlobal.localVerCode = this.getPackageManager().getPackageInfo(this.getPackageName(),0).versionCode;
UpdateGlobal.localVerName = this.getPackageManager().getPackageInfo(this.getPackageName(),0).versionName;
}catch(Exception e){
//tvMsg.setText(e.getMessage());
}
}
/**
* 检查更新版本
*/
public void checkVersion(){
//Toast.makeText(getApplicationContext(), UpdateGlobal.localVerCode+";"+ UpdateGlobal.serverVerCode, Toast.LENGTH_SHORT).show();
TextView tvVersionsShow = (TextView)findViewById(R.id.tvVersionsShow);
tvVersionsShow.append(""+UpdateGlobal.localVerName);
if(UpdateGlobal.localVerCode < UpdateGlobal.serverVerCode){
//发现新版本，提示用户更新
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setTitle("软件升级")
.setMessage("发现新版本 "+UpdateGlobal.serverVerName+",建议立即更新使用.")
.setPositiveButton("更新", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//开启更新服务UpdateService
//这里为了把update更好模块化，可以传一些updateService依赖的值
//如布局ID，资源ID，动态获取的标题,这里以app_name为例
//Intent updateIntent =new Intent(SplashActivity.this, UpdateService.class);
//updateIntent.putExtra("titleId",R.string.app_name);
//startService(updateIntent);
Message msg = new Message();
msg.what = UPDATA_CLIENT;
mHandler.sendMessage(msg);
}
})
.setNegativeButton("取消",new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
mHandler.sendEmptyMessageDelayed(GO_HOME, 3000);
}
});
alert.create().show();
}else{
//清理工作，略去
//cheanUpdateFile(),文章后面我会附上代码
mHandler.sendEmptyMessageDelayed(GO_HOME, 3000);
}
}
private void goHome() {
Intent intent = new Intent(SplashActivity.this, MyActivity.class);
SplashActivity.this.startActivity(intent);
SplashActivity.this.finish();
}
private void goGuide() {
Intent intent = new Intent(SplashActivity.this, GuideActivity.class);
SplashActivity.this.startActivity(intent);
SplashActivity.this.finish();
}
//从服务器中下载APK
protected void downLoadApk() {
final ProgressDialog pd; //进度条对话框
pd = new ProgressDialog(this);
pd.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
pd.setMessage("正在下载更新");
pd.show();
new Thread(){
@Override
public void run() {
try {
File file = DownLoadManager.getFileFromServer(UpdateGlobal.serverDownUrl, pd);
sleep(3000);
installApk(file);
pd.dismiss(); //结束掉进度条对话框
} catch (Exception e) {
Message msg = new Message();
msg.what = DOWN_ERROR;
mHandler.sendMessage(msg);
e.printStackTrace();
}
}}.start();
}
//安装apk
protected void installApk(File file) {
Intent intent = new Intent();
//执行动作
intent.setAction(Intent.ACTION_VIEW);
//执行的数据类型
intent.setDataAndType(Uri.fromFile(file), "application/vnd.android.package-archive");
startActivity(intent);
}
//根据传过来url创建文件
private File getFile(String url) {
File files = new File(Environment.getExternalStorageDirectory().getAbsoluteFile(), getFilePath(url));
return files;
}
//截取出url后面的apk的文件名
private String getFilePath(String url) {
return url.substring(url.lastIndexOf("/"), url.length());
}
/**
* Created by Amy on 2015/6/3 0003.
*/
}
------解决思路----------------------
先用handler.postDelay 让启动页休眠3秒，然后再判断是不是第一次进入即可！
你的休眠写在判断的时候，是不科学的。
------解决思路----------------------
参照下面的代码即可。
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent intent;
//如果第一次，则进入引导页WelcomeActivity
if (first) {
intent = new Intent(MainActivity.this,
WelcomeActivity.class);
} else {
intent = new Intent(MainActivity.this,
HomeActivity.class);
}
startActivity(intent);
// 设置Activity的切换效果
overridePendingTransition(R.anim.in_from_right,
R.anim.out_to_left);
MainActivity.this.finish();
}
}, TIME);
------解决思路----------------------
参照下面的代码即可。
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
Intent intent;
//如果第一次，则进入引导页WelcomeActivity
if (first) {
intent = new Intent(MainActivity.this,
WelcomeActivity.class);
} else {
intent = new Intent(MainActivity.this,
HomeActivity.class);
}
startActivity(intent);
// 设置Activity的切换效果
overridePendingTransition(R.anim.in_from_right,
R.anim.out_to_left);
MainActivity.this.finish();
}
}, TIME);
------解决思路----------------------
可以用sharedpreferences保存一条数据，那条数据标志着是否是第一次登陆。然后每次执行启动页的时候就去取出那条数据，如果那条数据代表第一登陆就跳转到引导页如果不是就跳到首页。