高仿膜拜单车安卓APP--Mobike 之Splash欢迎界面SplashActivity

做一个APP，首先是它的首页，给人一个品牌的形象，让人一眼就知道你的app做什么的。

先是主要代码：

1.activity主要代码

public class SplashActivity extends AppCompatActivity {
    private boolean isNeedSetting;
    private boolean isNeedLogin = true;
    private boolean isFirstRun  = true;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_splash);

        initData();

        initConnect();

        //  initGPS();

    }

2.XML代码：

3.initData()方法

    private void initData() {
        isFirstRun = getSharedPreferences(MyConstains.SP_MOBIKE, MODE_PRIVATE).
                getBoolean(IS_FIRST_RUN, true);
        isNeedLogin = getSharedPreferences(MyConstains.SP_MOBIKE, MODE_PRIVATE).
                getBoolean(MyConstains.IS_NEED_LOGIN, true);
    }

4.initConnect()方法

private void initConnect() {
        if (!isConn(this)) {
            //提示对话框
            AlertDialog.Builder builder = new AlertDialog.Builder(SplashActivity.this);
            builder.setMessage("网络无法访问，请检查网络").setPositiveButton("确定",
                    new DialogInterface.OnClickListener() {

                        @Override
                        public void onClick(DialogInterface dialog, int which) {
                            Intent intent = null;
                            //判断手机系统的版本  即API大于10 就是3.0或以上版本
                            if (android.os.Build.VERSION.SDK_INT > 21) {
                                intent = new Intent(Settings.ACTION_HOME_SETTINGS);
                            } else {
                                intent = new Intent();
                                ComponentName component = new ComponentName("com.android.settings", "com.android.settings.WirelessSettings");
                                intent.setComponent(component);
                                intent.setAction("android.intent.action.VIEW");
                            }
                            startActivityForResult(intent, 1);
                        }
                    }).setNegativeButton("取消", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                    finish();
                }
            }).show();
        } else {
            checkFirstRun();
        }
    }

5.判断网络是否正常

/**
     * 判断网络连接是否已开
     * true 已打开  false 未打开
     */
    public static boolean isConn(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
            if (mNetworkInfo != null) {
                return mNetworkInfo.isAvailable();
            }
        }
        return false;
    }

6.判断GPS是否正常

 private void initGPS() {
        LocationManager locationManager = (LocationManager) this
                .getSystemService(Context.LOCATION_SERVICE);
        // 判断GPS模块是否开启，如果没有则跳转至设置开启界面，设置完毕后返回到首页
        if (!locationManager.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
            AlertDialog.Builder builder = new AlertDialog.Builder(SplashActivity.this);
            builder.setTitle("GPS提示：");
            builder.setMessage("请打开GPS开关，以便您更准确的找到自行车");
            builder.setCancelable(false);

            builder.setPositiveButton("确定",
                    new android.content.DialogInterface.OnClickListener() {
                        @Override
                        public void onClick(DialogInterface arg0, int arg1) {

                            // 转到手机设置界面，用户设置GPS
                            Intent intent = new Intent(
                                    Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                            startActivityForResult(intent, 2); // 设置完成后返回到原来的界面

                        }
                    });
            builder.setNegativeButton("取消", new android.content.DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    dialog.dismiss();
                }
            }).show();
        }
    }

7.跳转设置后重新判断

    @Override
    protected void onResume() {
        super.onResume();
        if (isNeedSetting) {
            if (isConn(this)) {
                checkFirstRun();
            } else {
                initConnect();
            }
        }
    }

8.判断是否第一次运行，如果是，跳转引导界面

 private void checkFirstRun() {
        if (isFirstRun) {
            Go2Guide();
            getSharedPreferences(MyConstains.SP_MOBIKE, MODE_PRIVATE)
                    .edit()
                    .putBoolean(MyConstains.IS_FIRST_RUN, false)
                    .apply();
        } else {
            new Handler().postDelayed(new Runnable() {
                @Override
                public void run() {
                    if (isNeedLogin) {
                        Go2Login();
                    } else {
                        Go2Main();
                    }
                }
            }, 2000);
        }

    }

9.activity间的跳转

 private void Go2Login() {
        Intent intent = new Intent(SplashActivity.this, LoginActivity.class);
        startActivity(intent);
        finish();
    }

    private void Go2Main() {
        Intent intent = new Intent(SplashActivity.this, MainActivity.class);
        startActivity(intent);
        finish();
    }

    private void Go2Guide() {
        Intent intent = new Intent(SplashActivity.this, GuideActivity.class);
        startActivity(intent);
        finish();
    }

10.最后是跳转设置界面返回判断

 @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
            case 1:
            case 2:
                isNeedSetting = true;
                break;

            default:
                break;
        }
    }

首界面代码十分简单，主要判断网络，因为使用该APP必须联网的，最好是开GPS定位的，其次是延迟2S判断进入哪个页面。

github代码下载：yiwent

第一次写博客，喜欢希望多给个start，老铁，抱拳了。