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Bundle injection
with Dagger
Benoît Quenaudon @oldergod
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public class InputActivity extends Activity {
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
final EditText editText = findViewById(R.id.edit_text);
}a
}b
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public class InputActivity extends Activity {
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
final EditText editText = findViewById(R.id.edit_text);
findViewById(R.id.button).setOnClickListener(v -> {
});
}a
}b
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public class InputActivity extends Activity {
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
final EditText editText = findViewById(R.id.edit_text);
findViewById(R.id.button).setOnClickListener(v -> {
Intent intent = new Intent(InputActivity.this, OutputActivity.class);
intent.putExtra(EXTRA_SOME_INPUT, editText.getText().toString());
});
}a
}b
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public class InputActivity extends Activity {
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
final EditText editText = findViewById(R.id.edit_text);
findViewById(R.id.button).setOnClickListener(v -> {
Intent intent = new Intent(InputActivity.this, OutputActivity.class);
intent.putExtra(EXTRA_SOME_INPUT, editText.getText().toString());
InputActivity.this.startActivity(intent);
});
}a
}b
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public class InputActivity extends Activity {
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_input);
final EditText editText = findViewById(R.id.edit_text);
findViewById(R.id.button).setOnClickListener(v -> {
Intent intent = new Intent(InputActivity.this, OutputActivity.class);
intent.putExtra(EXTRA_SOME_INPUT, editText.getText().toString());
InputActivity.this.startActivity(intent);
});
}a
}b
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public class OutputActivity extends Activity {
OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}a
}c
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public class OutputActivity extends Activity {
OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter = new OutputPresenter(inputText);
}a
}c
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public class OutputActivity extends Activity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
}a
}c
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public class OutputActivity extends Activity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter.setInputText(inputText);
}a
}c
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public class OutputActivity extends Activity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter.setInputText(inputText);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}
}c
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No content
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public class BundleService {
private final Bundle data;
public BundleService() {
data = new Bundle();
}c
public Object get(String key) {
return data.get(key);
}d
public Bundle getAll() {
return data;
}f
}e
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public class BundleService {
private final Bundle data;
public BundleService(@Nullable Bundle savedState) {
data = new Bundle();
if (savedState != null) {
data.putAll(savedState);
}a
}c
public Object get(String key) {
return data.get(key);
}d
public Bundle getAll() {
return data;
}f
}e
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public class BundleService {
private final Bundle data;
public BundleService(@Nullable Bundle savedState, @Nullable Bundle intentExtras) {
data = new Bundle();
if (savedState != null) {
data.putAll(savedState);
}a
if (intentExtras != null) {
data.putAll(intentExtras);
}b
}c
public Object get(String key) {
return data.get(key);
}d
public Bundle getAll() {
return data;
}f
}e
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public class BundleService {
private final Bundle data;
public BundleService(@Nullable Bundle savedState, @Nullable Bundle intentExtras) {
data = new Bundle();
if (savedState != null) {
data.putAll(savedState);
}a
if (intentExtras != null) {
data.putAll(intentExtras);
}b
}c
public Object get(String key) {
return data.get(key);
}d
public Bundle getAll() {
return data;
}f
}e
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public abstract class BaseActivity extends Activity {
private BundleService bundleService;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
bundleService = new BundleService(savedInstanceState, getIntent().getExtras());
super.onCreate(savedInstanceState);
}a
}d
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public abstract class BaseActivity extends Activity {
private BundleService bundleService;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
bundleService = new BundleService(savedInstanceState, getIntent().getExtras());
super.onCreate(savedInstanceState);
}a
public BundleService getBundleService() {
return bundleService;
}b
}d
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public abstract class BaseActivity extends Activity {
private BundleService bundleService;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
bundleService = new BundleService(savedInstanceState, getIntent().getExtras());
super.onCreate(savedInstanceState);
}a
public BundleService getBundleService() {
return bundleService;
}b
@Override protected void onSaveInstanceState(Bundle outState) {
outState.putAll(bundleService.getAll());
super.onSaveInstanceState(outState);
}c
}d
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public abstract class BaseActivity extends Activity {
private BundleService bundleService;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
bundleService = new BundleService(savedInstanceState, getIntent().getExtras());
super.onCreate(savedInstanceState);
}a
public BundleService getBundleService() {
return bundleService;
}b
@Override protected void onSaveInstanceState(Bundle outState) {
outState.putAll(bundleService.getAll());
super.onSaveInstanceState(outState);
}c
}d
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@Module public abstract class BundleModule {
@Provides static BundleService provideBundleService(BaseActivity activity) {
return activity.getBundleService();
}
}
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No content
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@Qualifier @Retention(RUNTIME)
public @interface SomeInput {}a
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@Qualifier @Retention(RUNTIME)
public @interface SomeInput {}a
@Module public abstract class BundleModule {
public static final String EXTRA_SOME_INPUT = "SOME_INPUT";
@Provides static BundleService provideBundleService(BaseActivity activity) {
return activity.getBundleService();
}
@Provides @SomeInput static String provideSomeInput(BundleService bundleService) {
String style = (String) bundleService.get(EXTRA_SOME_INPUT);
return style == null ? "Null" : style;
}
}
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class OutputPresenter {
private final String inputText;
OutputPresenter(String inputText) {
this.inputText = inputText;
}a
void onStart() {
repository.doSomeWork(inputText);
}b
}c
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class OutputPresenter {
private final String inputText;
@Inject OutputPresenter(String inputText) {
this.inputText = inputText;
}a
void onStart() {
repository.doSomeWork(inputText);
}b
}c
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class OutputPresenter {
private final String inputText;
@Inject OutputPresenter(@SomeInput String inputText) {
this.inputText = inputText;
}a
void onStart() {
repository.doSomeWork(inputText);
}b
}c
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class OutputPresenter {
private final String inputText;
@Inject OutputPresenter(@SomeInput String inputText) {
this.inputText = inputText;
}a
void onStart() {
repository.doSomeWork(inputText);
}b
}c
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public class OutputActivity extends BaseActivity {
OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_output);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter = new OutputPresenter(inputText);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}b
}c
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public class OutputActivity extends BaseActivity {
OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_output);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter = new OutputPresenter(inputText);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}b
}c
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public class OutputActivity extends BaseActivity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_output);
String inputText = getIntent().getStringExtra(EXTRA_SOME_INPUT);
presenter = new OutputPresenter(inputText);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}b
}c
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public class OutputActivity extends BaseActivity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_output);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}b
}c
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public class OutputActivity extends BaseActivity {
@Inject OutputPresenter presenter;
@Override public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_output);
}a
@Override protected void onStart() {
super.onStart();
presenter.onStart();
}b
}c
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Fin
Benoît Quenaudon @oldergod