bd_etts_speech_female.dat，

bd_etts_speech_male.dat，

bd_etts_text.dat

加上執行時許可權判斷即可正常使用離線語音合成功能了

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        if(Build.VERSION.SDK_INT>=23){
            if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE)!=
                    PackageManager.PERMISSION_GRANTED){
                ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission
                .WRITE_EXTERNAL_STORAGE},1);
            }else {
                initialEnv();
            }
        }else {
            initialEnv();
        }

        initialView();
        initialTts();
    }

    private void initialEnv() {
        if (mSampleDirPath == null) {
            String sdcardPath = Environment.getExternalStorageDirectory().toString();
            mSampleDirPath = sdcardPath + "/" + SAMPLE_DIR_NAME;
        }
        makeDir(mSampleDirPath);
        copyFromAssetsToSdcard(false, SPEECH_FEMALE_MODEL_NAME, mSampleDirPath + "/" + SPEECH_FEMALE_MODEL_NAME);
        copyFromAssetsToSdcard(false, SPEECH_MALE_MODEL_NAME, mSampleDirPath + "/" + SPEECH_MALE_MODEL_NAME);
        copyFromAssetsToSdcard(false, TEXT_MODEL_NAME, mSampleDirPath + "/" + TEXT_MODEL_NAME);
        copyFromAssetsToSdcard(false, LICENSE_FILE_NAME, mSampleDirPath + "/" + LICENSE_FILE_NAME);
        copyFromAssetsToSdcard(false, "english/" + ENGLISH_SPEECH_FEMALE_MODEL_NAME, mSampleDirPath + "/"
                + ENGLISH_SPEECH_FEMALE_MODEL_NAME);
        copyFromAssetsToSdcard(false, "english/" + ENGLISH_SPEECH_MALE_MODEL_NAME, mSampleDirPath + "/"
                + ENGLISH_SPEECH_MALE_MODEL_NAME);
        copyFromAssetsToSdcard(false, "english/" + ENGLISH_TEXT_MODEL_NAME, mSampleDirPath + "/"
                + ENGLISH_TEXT_MODEL_NAME);
    }