Question

我正在使用in-app purchase。我在特定的Activity购物，然后存储在sharedpreferences 到目前为止没有问题。现在我想在另一个类中使用这些sharedpreferences`并检查是否付款是否要完成特定任务。
我的代码：

    `@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_premium);


        btnBuy = (Button) findViewById(R.id.btnBuy);
        btnBuy.setEnabled(false);
        btnBuy.setOnClickListener(this);

        mBillingProcessor = new BillingProcessor(
                this,
                BAZAAR_RSA_KEY,
                NIVAD_APPLICATION_ID,
                NIVAD_APPLICATION_SECRET,
                MarketName.CAFE_BAZAAR,
                this

        );


    }

    @Override
    public void onClick(View v) {
        mBillingProcessor.purchase(this, FULL_VERSION_SKU);

    }

        @Override
                public void onBillingInitialized() {
            btnBuy.setEnabled(true);
            btnBuy.setBackgroundColor(getResources().getColor( R.color.colorBoy));
            btnBuy.setText(R.string.Buy);
        }

        @Override
    public void onProductPurchased(String sku, TransactionDetails transactionDetails) {
            if (FULL_VERSION_SKU.equals(sku)) {

                PreferenceManager.getDefaultSharedPreferences(PremiumActivity.this)
                        .edit().putBoolean("is_full_version", true).apply();
                Toast.makeText(PremiumActivity.this, R.string.Lol, Toast.LENGTH_LONG).show();


            }

        }


        @Override
    public void onPurchaseHistoryRestored() {
        if(mBillingProcessor.isPurchased(FULL_VERSION_SKU)){
            PreferenceManager.getDefaultSharedPreferences(PremiumActivity.this)
                    .edit().putBoolean("is_full_version", true).apply();


        } else {
            PreferenceManager.getDefaultSharedPreferences(PremiumActivity.this)
                    .edit().putBoolean("is_full_version", false).apply();
        }
       }

        @Override
    public void onBillingError(int errorCode, Throwable throwable){
        if (errorCode == 205){
            Toast.makeText(PremiumActivity.this, R.string.nivad_protects_this_application, Toast.LENGTH_LONG).show();
        }
        }
    @Override
    protected void onDestroy() {
        if (mBillingProcessor != null) {
            mBillingProcessor.release();
        }
        super.onDestroy();
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (!mBillingProcessor.handleActivityResult(requestCode, resultCode, data)) {
            super.onActivityResult(requestCode, resultCode, data);
        }
    } `

Answer 1

getDefaultSharedPreferences将为仅限内部活动创建共享首选项文件。

你应该得到SharedPreferences这样的实例：

SharedPreferences preferences = context.getSharedPreferences("NAME",MODE_PRIVATE);

2.在另一项活动中，只需像上一次活动中所做的那样获取数据

SharedPreferences preferences = getSharedPreferences("NAME", MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.getBoolean("is_full_version", false);

在共享偏好中保存购买

1 个答案: