guanguan_app1/app/src/main/java/com/ynstkz/shitu/android/activity/HomeActivity.java

package com.ynstkz.shitu.android.activity;

import android.Manifest;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Bundle;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.Fragment;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;

import com.amap.api.location.AMapLocation;
import com.amap.api.location.AMapLocationClient;
import com.amap.api.location.AMapLocationClientOption;
import com.amap.api.location.AMapLocationListener;
import com.ynstkz.shitu.android.R;
import com.ynstkz.shitu.android.base.TitleBarActivity;
import com.ynstkz.shitu.android.fragment.ConfirmationDialogFragment;

import java.text.SimpleDateFormat;
import java.util.Date;

import butterknife.Bind;
import butterknife.ButterKnife;

public class HomeActivity extends TitleBarActivity implements AMapLocationListener {

    private static final String FRAGMENT_DIALOG = "dialog";
    private static final int REQUEST_CAMERA_PERMISSION = 1;

    @Bind(R.id.rl_lab_home)
    RelativeLayout rlLabHome;
    @Bind(R.id.rl_lab_nearby)
    RelativeLayout rlLabNearby;
    @Bind(R.id.rl_lab_usercenter)
    RelativeLayout rlLabUsercenter;
    @Bind(R.id.ll_bottom_lab)
    LinearLayout llBottomLab;

    private Fragment[] mFragments;
    private int tabIndex;

    //定位
    public AMapLocationClient mlocationClient;
    //声明mLocationOption对象
    public AMapLocationClientOption mLocationOption = null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ButterKnife.bind(this);
        initView();
        initData();
        setListener();
    }

    @Override
    protected int getLayoutId() {
        return R.layout.activity_home;
    }

    private void initView(){
        mFragments = new Fragment[3];
        mFragments[0] = getSupportFragmentManager().findFragmentById(R.id.fm_home);
        mFragments[1] = getSupportFragmentManager().findFragmentById(R.id.fm_nearby);
        mFragments[2] = getSupportFragmentManager().findFragmentById(R.id.fm_usercent);
        changleLayout(0);
    }

    private void initData(){
        mlocationClient = new AMapLocationClient(getApplicationContext());
        //初始化定位参数
        mLocationOption = new AMapLocationClientOption();
        //设置定位监听
        mlocationClient.setLocationListener(this);
        //设置定位模式为高精度模式，Battery_Saving为低功耗模式，Device_Sensors是仅设备模式
        mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Battery_Saving);
        //获取一次定位结果：
        mLocationOption.setOnceLocation(true);
        //设置是否返回地址信息（默认返回地址信息）
        mLocationOption.setNeedAddress(true);
        //设置定位参数
        mlocationClient.setLocationOption(mLocationOption);
    }

    private void setListener(){
        //首页
        rlLabHome.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                changleLayout(0);
            }
        });
        //附近
        rlLabNearby.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                changleLayout(1);
            }
        });
        //个人中心
        rlLabUsercenter.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(isLogin()){
                    changleLayout(2);
                } else {
                    startActivityForResult(new Intent(HomeActivity.this, LoginActivity.class), 10);
                }
            }
        });
    }

    /**
     * 切换fragment
     *
     * @param tabIndex
     */
    private void changleLayout(int tabIndex) {
        this.tabIndex = tabIndex;
        getSupportFragmentManager().beginTransaction().hide(mFragments[0]).hide(mFragments[1])
                .hide(mFragments[2]).show(mFragments[tabIndex]).commitAllowingStateLoss();
        switch (tabIndex) {

        }
    }


    @Override
    public void onLocationChanged(AMapLocation amapLocation) {
        if (amapLocation != null) {
            if (amapLocation.getErrorCode() == 0) {
                //定位成功回调信息，设置相关消息
                amapLocation.getLocationType();//获取当前定位结果来源，如网络定位结果，详见定位类型表
                amapLocation.getLatitude();//获取纬度
                amapLocation.getLongitude();//获取经度
                amapLocation.getAccuracy();//获取精度信息
                SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                Date date = new Date(amapLocation.getTime());
                df.format(date);//定位时间
            } else {
                //显示错误信息ErrCode是错误码，errInfo是错误信息，详见错误码表。
                Log.e("AmapError", "location Error, ErrCode:"
                        + amapLocation.getErrorCode() + ", errInfo:"
                        + amapLocation.getErrorInfo());
            }
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
                == PackageManager.PERMISSION_GRANTED) {
            //启动定位
            mlocationClient.startLocation();
        } else if (ActivityCompat.shouldShowRequestPermissionRationale(this,
                Manifest.permission.ACCESS_COARSE_LOCATION)){
            ConfirmationDialogFragment
                    .newInstance(R.string.app_name,
                            new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
                            REQUEST_CAMERA_PERMISSION,
                            R.string.app_name)
                    .show(getSupportFragmentManager(), FRAGMENT_DIALOG);
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
                    REQUEST_CAMERA_PERMISSION);
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (requestCode) {
            case 10:
                if(resultCode == RESULT_OK) { //登陆成功
                    changleLayout(2);
                }
                break;
        }
    }

}