我正在构建app。我拥有的一个功能是付费选项，用户可以访问其他布局。现在，用户可以通过单击按钮到达那里。相反，我想要一个滑动动作 - 如果用户向下滑动，它将要求获得付费布局的许可。如果他们付费，当他们向上滑动时，他们可以访问原始布局。
这是我的主要活动：
public class MainActivity extends AppCompatActivity {
EditText editText2;
Button btn_purchase;
ImageView imageView2;
String skuId;
SessionManager sessionManager;
// create new Person
private BillingClient mBillingClient;
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate (Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sessionManager=new SessionManager(MainActivity.this);
if(sessionManager.getPurchased()){
Intent intent = new Intent(MainActivity.this, PaidActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
btn_purchase=findViewById(R.id.btn_purchase);
imageView2 = (ImageView) findViewById(R.id.imageView2);
mBillingClient = BillingClient.newBuilder(MainActivity.this).setListener(new PurchasesUpdatedListener() {
@Override
public void onPurchasesUpdated(int responseCode, @Nullable List<Purchase> purchases) {
if (responseCode == BillingClient.BillingResponse.OK
&& purchases != null) {
for (Purchase purchase : purchases) {
//TODO: Handle purchase
// handlePurchase(purchase);
Log.e("Main", "handle Purchase ");
Log.e("MainAct", "onPurchasesUpdated() response: " + responseCode);
Log.e("dev", "successful purchase...");
String purchasedSku = purchase.getSku();
Log.e("dev", "Purchased SKU: " + purchasedSku);
String purchaseToken = purchase.getPurchaseToken();
sessionManager.savePurchased(true);
Intent intent = new Intent(MainActivity.this, PaidActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
finish();
}
} else if (responseCode == BillingClient.BillingResponse.USER_CANCELED) {
// Handle an error caused by a user cancelling the purchase flow.
} else {
// Handle any other error codes.
}
}
}).build();
List<String> skuList = new ArrayList <> ();
skuList.add("appsubscription2018");
SkuDetailsParams.Builder params = SkuDetailsParams.newBuilder();
params.setSkusList(skuList).setType(BillingClient.SkuType.INAPP);
mBillingClient.querySkuDetailsAsync(params.build(),
new SkuDetailsResponseListener() {
@Override
public void onSkuDetailsResponse(int responseCode, List<SkuDetails> skuDetailsList) {
// Process the result.
if (responseCode == BillingClient.BillingResponse.OK && skuDetailsList != null) {
Log.e("MainActivity", "onSkuDetailsResponse: success");
for (SkuDetails skuDetails : skuDetailsList) {
Log.e("MainActivity", "products: "+skuDetailsList);
String sku = skuDetails.getSku();
skuId = skuDetails.getSku();
String price = skuDetails.getPrice();
if ("appsubscription2018 ".equals(sku)) {
Log.e("MainActivity", "product is appsubscription2018 ");
// mPremiumUpgradePrice = price;
}
}
}
}
});
btn_purchase.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mBillingClient.startConnection(new BillingClientStateListener() {
@Override
public void onBillingSetupFinished(@BillingClient.BillingResponse int billingResponseCode) {
if (billingResponseCode == BillingClient.BillingResponse.OK) {
// The billing client is ready. You can query purchases here.
// The billing client is ready. You can query purchases here.
BillingFlowParams flowParams = BillingFlowParams.newBuilder()
.setSku("appsubscription2018")
.setType(BillingClient.SkuType.INAPP)
.build();
int responseCode = mBillingClient.launchBillingFlow(MainActivity.this, flowParams);
if (responseCode != BillingClient.BillingResponse.OK) {
Log.e("Main", "launchBillingFlow ok");
}
}
}
@Override
public void onBillingServiceDisconnected() {
// Try to restart the connection on the next request to
// Google Play by calling the startConnection() method.
}
});
}
});
imageView2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (checkFilePermission(MainActivity.this)){
getPhoto();
}
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode ==1 && resultCode == RESULT_OK && data != null) {
Uri selectedImage = data.getData();
try {
Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);
imageView2.setImageBitmap(bitmap);
} catch (IOException e) {
e.printStackTrace();
}
}
}
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public static boolean checkFilePermission(final Context context) {
int currentAPIVersion = Build.VERSION.SDK_INT;
if(currentAPIVersion>= Build.VERSION_CODES.M)
{
if (ContextCompat.checkSelfPermission(context, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) context, Manifest.permission.READ_EXTERNAL_STORAGE)) {
AlertDialog.Builder alertBuilder = new AlertDialog.Builder(context);
alertBuilder.setCancelable(true);
alertBuilder.setTitle("Permission necessary");
alertBuilder.setMessage("External storage permission is necessary");
alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
public void onClick(DialogInterface dialog, int which) {
ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
}
});
AlertDialog alert = alertBuilder.create();
alert.show();
} else {
ActivityCompat.requestPermissions((Activity) context, new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 1);
}
return false;
} else {
return true;
}
} else {
return true;
}
}
public void getPhoto() {
Intent intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent,1);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if (requestCode ==1){
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED);{
getPhoto();
}
}
}
}