"OESPJEΞϓϦΛ࡞Δ,.$OPOZMFOFը૾ؔɾ+BWB͔ΒͷϨΠΞτɾઃఆ
View Slide
ࣗݾհw OPOZMFOF ͷʹΕΜw ,.$ճw ΧʔϏΟͰ͢w ϙέϞϯϐΫϩεপw SPPU
ࣗݾհw OPOZMFOF ͷʹΕΜw εϚϗΞϓϦͱ͔w 5XJUUFS(JU)VCFUDw IUUQOPOZMFOFIBUFOBCMPHKQ
͜ΜΜ
ࠓΔ͜ͱ ը૾ؔ *NBHF7JFX ϨΠΞτGSPN+BWB ઃఆอଘ
ը૾ؔ
*NBHF7JFXw Drawable Λදࣔ͢ΔͨΊͷView௨ৗͷ View ͷ background ͰදࣔͰ͖Δ͕ɺେ͖͞มߋͳͲ͕Ͱ͖ͳ͍.
"OESPJEͷը૾ͷදݱ• Bitmapw ը૾Λද͢• Drawablew ʮը໘ʹදࣔ͞ΕΔͷʯΛද͢w ը૾͔͠Εͳ͍͠ɺͨͩͷ৭͔͠Εͳ͍w ImageViewഎܠͰදࣔ͞ΕΔͷ͜Ε
"OESPJEͷը૾ͷදݱ"OJNBUJPO %SBXBCMF#JUNBQ$PMPS"OJNBUJPO#JUNBQ%SBXBCMF$PMPS%SBXBCMF%SBXBCMF$POWFSU
ը૾Λஔ• res/drawable/ ʹ Drawable Λઃஔ͢Δw ࠓճը૾ 1/('JMFw 9.-Ͱهड़͢Δ͜ͱՄೳw ϑΝΠϧΛίϐʔ͢ΔPS "OESPJE4UVEJPܦ༝Ͱίϐʔ͢Δղ૾ผʹ࠷దͳը૾Λ༻ҙ͢Δ͜ͱͰ͖Δ (drawable-hdpi ͳͲ)
ஔྫ
ը૾Λදࣔ• android:src• ImageView Ͱදࣔ͢Δ Drawable Λઃఆandroid:layout_width="100dp"android:layout_height="100dp"android:src="@drawable/kirby"/>
ը૾Λදࣔ
ը૾Λදࣔw ิw android:scaleTypeͰը૾ͷ֦େํ๏ΛબΔw ৄࡉলུ
-BZPVU GSPN+BWB
+BWBͰͷϨΠΞτw 9.-ʹॻ͍͍֤ͯͨView+BWBͷΫϥε• TextView -> android.widget.TextView• EditText -> android.widget.EditText • શͯ View ΫϥεͷࢠΫϥεXML Ͱ android.widget ʹ͋Δ View ಛผʹύοέʔδ໊ΛলུͰ͖͍ͯͨ. ಠࣗͷ View ͷ߹লུͰ͖ͳ͍.
7JFXͷຊ࣭+BWBw 7JFXͷॳظԽ7JFXͷίϯετϥΫλͰ։࠵9.-Λύʔεʢղੳʣ7JFXͷॳظԽॲཧΛ࣮ߦɾ ྫandorid:text#setText(…)
7JFXΛऔಘ
7JFXΛऔಘ• View #findViewById(int id)w ActivityViewGroupʹੜ͑ͯΔw ࢦఆͨ͠idͷViewΛऔಘ
7JFXΛऔಘ* MainActivity.java// setContentView લʹߦ͏ͱ View ͕औಘͰ͖ͳ͍setContentView(R.layout.activity_main);EditText editText =(EditText) findViewById(R.id.post_edit);Button submitButton =(Button) findViewById(R.id.post_button);
* MainActivity.java// setContentView લʹߦ͏ͱ View ͕औಘͰ͖ͳ͍setContentView(R.layout.activity_main);EditText editText =(EditText) findViewById(R.id.post_edit);Button submitButton =(Button) findViewById(R.id.post_button);7JFXΛऔಘ*%͕FEJU@UFYUͷ7JFXΛऔಘ
* MainActivity.java// setContentView લʹߦ͏ͱ View ͕औಘͰ͖ͳ͍setContentView(R.layout.activity_main);EditText editText =(EditText) findViewById(R.id.post_edit);Button submitButton =(Button) findViewById(R.id.post_button);7JFXΛऔಘ&EJU5FYUʹΩϟετͯ͠ೖfindViewById ͷฦΓ View ݻఆͳͷͰΩϟετ͢Δඞཁ͕͋Δ
7JFXΛ +BWB͔Βૢ࡞
7JFXΛૢ࡞w 7JFXͷؔΛݺͿ͜ͱͰૢ࡞͕ՄೳeditText.setHint(“KMC");editText.setVisibility(View.GONE);imageView.setImageResource(R.drawable.kirby);// pixel ୯ҐͳͷͰҙsubmitButton.setWidth(300);// ॻ͔Εͨจࣈྻ͕ฦͬͯ͘ΔeditText.getText();
w ͓͢͢Ί͠·ͤΜw දࣔ͢Δ͚ͩͷίʔυ͕͘ෳࡶʹͳΔw ࣮ࡍͬͯΔਓ͍Δ͚Ͳʜw දࣔͷઃఆͱڍಈͷઃఆ͚͍ͨ w 9.-ʹॻ͚Δ෦ॻ͘͜ͱ͕ଟ͍શ෦+BWBͰॻ͚ศརʁ
ΫϦοΫ࣌ͷڍಈ
ΫϦοΫ࣌ͷڍಈ• View#setOnClickListener( OnClickListener listener)• ΫϦοΫ͞Εͨ࣌ʹݺΕΔϦεφΛઃఆ͢Δ• View.OnClickListener Λઃఆ • View.OnCliclListener ͱʁ
7JFX0O$MJDL-JTUFOFSw ϝιου͕Ұͭઃఆ͞ΕͨΠϯλʔϑΣʔεw ΫϦοΫ࣌ʹonClick͕ݺͼग़͞ΕΔ* View.java (Android SDK)public interface OnClickListener {void onClick(View v);}
ΫϦοΫͰτʔετ
* MainActivity.javasubmitButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(v.getContext(),“clicked!”, Toast.LENGTH_LONG).show();}});ϘλϯΫϦοΫͰτʔετɹ
* MainActivity.javasubmitButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(v.getContext(),“clicked!”, Toast.LENGTH_LONG).show();}});ϘλϯΫϦοΫͰτʔετɹ0O$MJDL-JTUFOFSͷແ໊ΦϒδΣΫτ
* MainActivity.javasubmitButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(v.getContext(),“clicked!”, Toast.LENGTH_LONG).show();}});ϘλϯΫϦοΫͰτʔετɹΫϦοΫ͢ΔͱݺΕΔؔ
* MainActivity.javasubmitButton.setOnClickListener(new View.OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(v.getContext(),“clicked!”, Toast.LENGTH_LONG).show();}});ϘλϯΫϦοΫͰτʔετɹτʔετΛදࣔ
ϘλϯΫϦοΫͰτʔετɹˠClick
ઃఆอଘ
ઃఆอଘw ͍͔ͭ͘ͷํ๏͕͋Δw 4IBSFE1SFGFSFODFw ࠓճΓ·͢w 4RMJUF σʔλϕʔεw ֎෦ϥΠϒϥϦ
4IBSFE1SFGFSFODFw ઃఆͳͲΛอଘ͢ΔΈw ΩʔόϦϡʔܗࣜͰอଘw த9.-w อଘͰ͖ΔܕݶΒΕ͍ͯΔ• int, long, float, boolean, String, Set
4IBSFE1SFGFSFODFw ෳͷ9.-ϑΝΠϧʹอଘͰ͖Δw ϑΝΠϧ͝ͱʹΩʔ໊Ұҙw ࠓճσϑΥϧτͷ9.-ϑΝΠϧΛ༻w ϑΝΠϧΛؒҧ͑ͯϋϚΒͳ͍Α͏ʹw ؒҧ͑ͯެ։͞ΕΔ͜ͱ͕ͳ͍Α͏ʹw ઃఆʹΑͬͯଞͷΞϓϦͰಡΈऔΕͯ͠·͏
4IBSFE1SFGFSFODF• σϑΥϧτͷ SharedPreferences Λऔಘ• ϑΝΠϧ͝ͱͷઃఆ (SharedPreference) Λཧ͢ΔΫϥεSharedPreferences sharedPreferences =PreferenceManager.getDefaultSharedPreferences(context); Static ϝιου
4IBSFE1SFGFSFODFTw อଘsharedPreferences.edit().putInt("hoge", 1).putString("piyo", "piyoipyo").putBoolean("foo", true).apply();
4IBSFE1SFGFSFODFTw อଘsharedPreferences.edit().putInt("hoge", 1).putString("piyo", "piyoipyo").putBoolean("foo", true).apply();4IBSFE1SFGFSFOFT&EJUPSΛऔಘ
w อଘsharedPreferences.edit().putInt("hoge", 1).putString("piyo", "piyoipyo").putBoolean("foo", true).apply();4IBSFE1SFGFSFODFTΩʔͱΛ֨ೲput~~~ ͷฦΓ editor ࣗͳͷͰ͜ͷΑ͏ʹॻ͚Δ ʢνΣʔϯϝιουͱ͍͏ʣ.
w อଘsharedPreferences.edit().putInt("hoge", 1).putString("piyo", "piyoipyo").putBoolean("foo", true).apply();4IBSFE1SFGFSFODFTઃఆΛөcommit() ಉظతͰ͕͔͔࣌ؒΔͷͰඇਪ
4IBSFE1SFGFSFODFTw औΓग़͠sharedPreferences.getInt("hoge", 0);sharedPreferences.getString("piyo", null);sharedPreferences.getBoolean("foo", false);ΩʔͱσϑΥϧτΛࢦఆ
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