一、獲取引數

1、註冊登入Line開發者賬號

在Line官網並找不到註冊地方，可以通過Line APP進行註冊，註冊之後進入Line開發者官網：https://developers.line.me/en/進行開發者賬號授權。

2、建立應用

3、建立完成在Channel settings下獲取Channel ID和Channel secrt

4、在AppSettings下配置包名和簽名

5、下載Line 的aar：https://developers.line.biz/en/docs/line-login/downloads/，並引入工程

allprojects {
    repositories {
        ...
        flatDir {
            dirs 'libs'
        }
    ...
    }
}
 

compile(name: 'line_sdk_4.0.8', ext: 'aar')

二、登入實現

1.APP-APP

int REQUEST_CODE=1;
LineApiClient lineApiClient;
LineApiClientBuilder apiBuilder= new LineApiClientBuilder(activity,lineChannelID);
lineApiClient=apiBuilder.build();
if(checkApkExist(activity,"jp.naver.line.android")){//App-to-App
    Log.d(tag,"Login-App-to-App");
    Intent loginIntent= LineLoginApi.getLoginIntent(activity,lineChannelID);
} else{
    //瀏覽器中的LINE登入介面
    Log.d(tag,"Login-web");
                       loginIntent=LineLoginApi.getLoginIntentWithoutLineAppAuth(activity,lineChannelID);
}
activity.startActivityForResult(loginIntent,REQUEST_CODE);
 

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode != REQUEST_CODE) {
            Log.e("ERROR", "Unsupported Request");
            return;
        }
        try {
            LineLoginResult result = LineLoginApi.getLoginResultFromIntent(data);
            Log.e(tag,"msg="+result.getErrorData().getMessage());
            switch (result.getResponseCode()) {
                case SUCCESS:
                    // Login successful
                    Log.d(tag,"loginSuccess");
                    String user_id=result.getLineProfile().getUserId();
                    String user_name=result.getLineProfile().getDisplayName();
                    String accessToken = result.getLineCredential().getAccessToken().getAccessToken();
                    break;

                case CANCEL:
                    // Login canceled by user
                    Log.e(tag, "LINE Login Canceled by user!!");
                    Log.e(tag,"msg="+result.getErrorData().getMessage());
                    break;

                default:
                    // Login canceled due to other error
                    Log.e(tag, "Login FAILED!"+result.getErrorData().toString());
            }
        }catch (Exception e){
            e.printStackTrace();
        }
    }
 

    //檢查是否安裝了app
    public boolean checkApkExist(Context context, String packageName){
        if(packageName==null){
            return false;
        }
        try{
            ApplicationInfo applicationInfo=context.getPackageManager()
                    .getApplicationInfo(packageName, PackageManager.GET_UNINSTALLED_PACKAGES);
            return true;
        }catch (Exception e){
            e.printStackTrace();
            return false;
        }
    }

三、分享實現

   public void shareToLine(Activity activity,String uriString,String title,String text){
        Log.d(tag,"share to Line");
        String linePackageName="jp.naver.line.android";
    String lineClassName="jp.naver.line.android.activity.selectchat.SelectChatActivityLaunchActivity";
        ComponentName componentName=new ComponentName(linePackageName,lineClassName);
        Intent shareIntent=new Intent();
        shareIntent.setAction(Intent.ACTION_SEND);
        Uri uri = Uri.parse(uriString);
        shareIntent.putExtra(Intent.EXTRA_STREAM, uri);
       // shareIntent.setType("image/jpeg"); //圖片分享
        shareIntent.setType("text/plain"); // 純文字
        shareIntent.putExtra(Intent.EXTRA_SUBJECT, title);//分享的標題
        shareIntent.putExtra(Intent.EXTRA_TEXT, text);//分享內容
        shareIntent.setComponent(componentName);//跳到指定APP的Activity
        activity.startActivity(Intent.createChooser(shareIntent,""));
    }