Android Development Note ___ Image view

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "Android:layout_width=" Match_parent "android:layout_height=" match_parent "android:orientation=" vertical "&    Gt <imageview android:id= "@+id/iv_scale" android:layout_width= "Match_parent" android:layout_height= "3 00DP "android:layout_margintop=" 10DP "android:src=" @drawable/apple1 "/> <linearlayout androi D:layout_width= "Match_parent" android:layout_height= "wrap_content" android:layout_margintop= "10DP" an droid:orientation= "Horizontal" > <button android:id= "@+id/btn_fitcenter" Android:layout_ Width= "0DP" android:layout_height= "Wrap_content" android:layout_weight= "1" android:text= " Fitcenter "android:textcolor=" #000000 "android:textsize=" 11sp "/> <button an Droid:id= "@+id/btn_centercroP "android:layout_width=" 0DP "android:layout_height=" Wrap_content "android:layout_weight=        "1" android:text= "Centercrop" android:textcolor= "#000000" android:textsize= "11sp"/> <button android:id= "@+id/btn_centerinside" android:layout_width= "0DP" Android:la yout_height= "Wrap_content" android:layout_weight= "1" android:text= "Centerinside" Android: Textcolor= "#000000" android:textsize= "11sp"/> </LinearLayout> <linearlayout android:l Ayout_width= "Match_parent" android:layout_height= "wrap_content" android:layout_margintop= "10DP" Andro id:orientation= "Horizontal" > <button android:id= "@+id/btn_center" android:layout_width= "0DP" android:layout_height= "Wrap_content" android:layout_weight= "1" android:text= "center "Android:texTcolor= "#000000" android:textsize= "11sp"/> <button android:id= "@+id/btn_fitxy"            Android:layout_width= "0DP" android:layout_height= "Wrap_content" android:layout_weight= "1" android:text= "Fitxy" android:textcolor= "#000000" android:textsize= "11sp"/> <butto n android:id= "@+id/btn_fitstart" android:layout_width= "0DP" android:layout_height= "Wrap_c            Ontent "android:layout_weight=" 1 "android:text=" Fitstart "android:textcolor=" #000000 " Android:textsize= "11sp"/> <button android:id= "@+id/btn_fitend" Android:layout_ Width= "0DP" android:layout_height= "Wrap_content" android:layout_weight= "1" android:text= " Fitend "android:textcolor=" #000000 "android:textsize=" 11sp "/> </LinearLayout> <bu Tton Android:layoUt_width= "Match_parent" android:layout_height= "wrap_content" android:text= "screenshot" android:id= "@+id/btn_2 .3.3.2 "/></linearlayout>

Java

 PackageCom.example.alimjan.hello_world;ImportAndroid.content.Context;Importandroid.content.Intent;ImportAndroid.os.Bundle;Importandroid.support.v7.app.AppCompatActivity;ImportAndroid.view.View;ImportAndroid.widget.Button;ImportAndroid.widget.ImageView;/*** Created by Alimjan on 6/30/2017.*/ Public classClass__2_3_3extendsAppcompatactivityImplementsView.onclicklistener {PrivateImageView Iv_scale; PrivateButton Btn_2_3_3_2; @Overrideprotected voidonCreate (Bundle savedinstancestate) {Super. OnCreate (savedinstancestate);        Setcontentview (R.layout.code_2_3_3); Iv_scale=(ImageView) Findviewbyid (R.id.iv_scale); Findviewbyid (R.id.btn_center). Setonclicklistener ( This); Findviewbyid (R.id.btn_fitcenter). Setonclicklistener ( This); Findviewbyid (R.id.btn_centercrop). Setonclicklistener ( This); Findviewbyid (r.id.btn_centerinside). Setonclicklistener ( This); Findviewbyid (R.ID.BTN_FITXY). Setonclicklistener ( This); Findviewbyid (R.id.btn_fitstart). Setonclicklistener ( This); Findviewbyid (r.id.btn_fitend). Setonclicklistener ( This); Btn_2_3_3_2=(Button) Findviewbyid (r.id.btn_2_3_3_2); Btn_2_3_3_2.setonclicklistener ( This); } @Override Public voidOnClick (View v) {if(V.getid () = =r.id.btn_center)        {Iv_scale.setscaletype (ImageView.ScaleType.CENTER); } Else if(V.getid () = =r.id.btn_fitcenter)        {Iv_scale.setscaletype (ImageView.ScaleType.FIT_CENTER); } Else if(V.getid () = =R.id.btn_centercrop)        {Iv_scale.setscaletype (ImageView.ScaleType.CENTER_CROP); } Else if(V.getid () = =r.id.btn_centerinside)        {Iv_scale.setscaletype (ImageView.ScaleType.CENTER_INSIDE); } Else if(V.getid () = =r.id.btn_fitxy)        {Iv_scale.setscaletype (ImageView.ScaleType.FIT_XY); } Else if(V.getid () = =R.id.btn_fitstart)        {Iv_scale.setscaletype (ImageView.ScaleType.FIT_START); } Else if(V.getid () = =r.id.btn_fitend)        {Iv_scale.setscaletype (ImageView.ScaleType.FIT_END); } Else if(V.getid () = =r.id.btn_2_3_3_2) {class__2_3_3_2.starthome (class__2_3_3). This); }    }     Public Static voidstarthome (Context mcontext) {Intent Intent=NewIntent (Mcontext, Class__2_3_3.class);    Mcontext.startactivity (Intent); }}

Android Development Note ___ Image view