Partage de code du convertisseur d'images Android

MainActivity.java

 paquet com.zhang.showPhoto ; importer android.app.ActionBar.LayoutParams; importer android.app.Activity; importer android.os.Bundle; importer android.view.View; importer android.view.View.OnClickListener; importer android.view.animation.AnimationUtils; importer android .widget.Button ; importer android.widget.ImageSwitcher ; importer android.widget.ImageView ; importer android.widget.ViewSwitcher.ViewFactory ; public class MainActivity extends Activity { private int[] imagId=new int[]{ R.drawable.img01,R.drawable.img02,R.drawable.img03,R.drawable.img04, R.drawable.img05,R.drawable .img06,R.drawable.img07,R.drawable.img08, R.drawable.img09,R.drawable.img10 } ; indice int privé = 0 ; ImageSwitcher privé imageSwitcher ; bouton privé haut, bas ; @Override protected void onCreate(Bundle savingInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); up=(Bouton) findViewById(R.id.bt1); down=(Bouton) findViewById(R.id.bt2); imageSwitcher=(ImageSwitcher) findViewById(R.id.imagSw1); imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in)); imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out)); imageSwitcher.setFactory(new ViewFactory() { public View makeView() { ImageView imageView = new ImageView(MainActivity.this); imageView.setScaleType(ImageView.ScaleType.FIT_CENTER); imageView.setLayoutParams(new ImageSwitcher.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT )); imageView; } }); imageSwitcher.setImageResource(imagId[index]); up.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(index>0){ index--; }else{ index=imagId.length-1; } imageSwitcher.setImageResource(imagId[index] ); } }); down.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(index<imagId.length-1){ index++; }else{ index=0; } imageSwitcher.setImageResource(imagId[index]); } }); } }

main.xml

 <?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="@drawable/bg1" android:id="@+id/llayout" android:layout_width="fill_parent" android:layout_height="fill_parent" android:gravity="center" android:orientation="horizontal" > <Bouton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="上一张" android:id="@+id/bt1" /> <ImageSwitcher android:layout_width="wrap_content" android:layout_height ="wrap_content" android:id="@+id/imagSw1" android:layout_gravity="center" /> <Bouton android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="下一张" android:id="@+id/bt2" /> </LinearLayout>

再来看一段代码

 // Utilisation de BitmapFactory.Options opt = new BitmapFactory.Options(); opt.inJustDecodeBounds = true ; essayez{ bitmapIn = BitmapFactory.decodeFile(Puzzle.user.CUSTOM_IMAGE[customImage], opt); }catch(Exception e){ if(D) Log.d(TAG,"erreur"); retour; } int in_w=opt.outWidth,in_h=opt.outHeight; // Affichage d'imageview et imageview d'imageview full_w = imageview.getWidth() full_h = getHeight() // Il s'agit d'un int Size_rate=(in_w*in_h*10)/(full_w*full_h); si (taux_taille>10){taux_taille+=5 ; Taux_taille/=10 ; }else{ Size_rate=1 ; } // Paramètres opt.inSampleSize=Size_rate; opt.inJustDecodeBounds = false; opt.inScaled = faux ; opt.outWidth=full_w; opt.outHeight=full_h; bitmapIn = BitmapFactory.decodeFile(Puzzle.user.CUSTOM_IMAGE[customImage], opt);}