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- UI improvements - Ability to use SDCard - Ability to share content - Code cleanup - Minor fixes & improvements
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96
app/src/main/java/com/verNANDo57/rulebook_educational/app/CustomActivityResult.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| /* | ||
| * Author: VerNANDo57 <[email protected]> | ||
| */ | ||
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| package com.verNANDo57.rulebook_educational.app; | ||
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| import android.content.Intent; | ||
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| import androidx.activity.result.ActivityResult; | ||
| import androidx.activity.result.ActivityResultCaller; | ||
| import androidx.activity.result.ActivityResultLauncher; | ||
| import androidx.activity.result.contract.ActivityResultContract; | ||
| import androidx.activity.result.contract.ActivityResultContracts; | ||
| import androidx.annotation.NonNull; | ||
| import androidx.annotation.Nullable; | ||
|
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| public class CustomActivityResult<Input, Result> { | ||
| /** | ||
| * Register activity result using a {@link ActivityResultContract} and an in-place activity result callback like | ||
| * the default approach. You can still customise callback using {@link #launch(Object, OnActivityResult)}. | ||
| */ | ||
| @NonNull | ||
| public static <Input, Result> CustomActivityResult<Input, Result> registerForActivityResult( | ||
| @NonNull ActivityResultCaller caller, | ||
| @NonNull ActivityResultContract<Input, Result> contract, | ||
| @Nullable OnActivityResult<Result> onActivityResult) { | ||
| return new CustomActivityResult<>(caller, contract, onActivityResult); | ||
| } | ||
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|
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| /** | ||
| * Same as {@link #registerForActivityResult(ActivityResultCaller, ActivityResultContract, OnActivityResult)} except | ||
| * the last argument is set to {@code null}. | ||
| */ | ||
| @NonNull | ||
| public static <Input, Result> CustomActivityResult<Input, Result> registerForActivityResult( | ||
| @NonNull ActivityResultCaller caller, | ||
| @NonNull ActivityResultContract<Input, Result> contract) { | ||
| return registerForActivityResult(caller, contract, null); | ||
| } | ||
|
|
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| /** | ||
| * Specialised method for launching new activities. | ||
| */ | ||
| @NonNull | ||
| public static CustomActivityResult<Intent, ActivityResult> registerActivityForResult( | ||
| @NonNull ActivityResultCaller caller) { | ||
| return registerForActivityResult(caller, new ActivityResultContracts.StartActivityForResult()); | ||
| } | ||
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| /** | ||
| * Callback interface | ||
| */ | ||
| public interface OnActivityResult<O> { | ||
| /** | ||
| * Called after receiving a result from the target activity | ||
| */ | ||
| void onActivityResult(O result); | ||
| } | ||
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| private final ActivityResultLauncher<Input> launcher; | ||
| @Nullable | ||
| private OnActivityResult<Result> onActivityResult; | ||
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| private CustomActivityResult(@NonNull ActivityResultCaller caller, | ||
| @NonNull ActivityResultContract<Input, Result> contract, | ||
| @Nullable OnActivityResult<Result> onActivityResult) { | ||
| this.onActivityResult = onActivityResult; | ||
| this.launcher = caller.registerForActivityResult(contract, this::callOnActivityResult); | ||
| } | ||
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| public void setOnActivityResult(@Nullable OnActivityResult<Result> onActivityResult) { | ||
| this.onActivityResult = onActivityResult; | ||
| } | ||
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| /** | ||
| * Launch activity, same as {@link ActivityResultLauncher#launch(Object)} except that it allows a callback | ||
| * executed after receiving a result from the target activity. | ||
| */ | ||
| public void launch(Input input, @Nullable OnActivityResult<Result> onActivityResult) { | ||
| if (onActivityResult != null) { | ||
| this.onActivityResult = onActivityResult; | ||
| } | ||
| launcher.launch(input); | ||
| } | ||
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| /** | ||
| * Same as {@link #launch(Object, OnActivityResult)} with last parameter set to {@code null}. | ||
| */ | ||
| public void launch(Input input) { | ||
| launch(input, this.onActivityResult); | ||
| } | ||
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| private void callOnActivityResult(Result result) { | ||
| if (onActivityResult != null) onActivityResult.onActivityResult(result); | ||
| } | ||
| } |
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