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我創建回收視圖來顯示數據，之後我想通過 位置的數據到另一個活動，但是當我使用loge檢查位置是否合格時在logcat中找不到位置。通過改造活動傳遞數據
在MainActivity我添加靜態列表Recipe模型和創建方法返回此列表：
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private ProgressBar progressBar;
private LinearLayoutManager mLayoutManager;
private ArrayList<Model> list;
private RecyclerViewAdapter adapter;
private static List<Recipe>mListrecipe;
String url = "https://d17h27t6h515a5.cloudfront.net/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
progressBar = (ProgressBar) findViewById(R.id.progressbar);
mLayoutManager = new LinearLayoutManager(MainActivity.this, LinearLayoutManager.VERTICAL, false);
recyclerView.setLayoutManager(mLayoutManager);
/// create a list--
list = new ArrayList<>();
/// get the list from json file
getRetrofitArray();
adapter = new RecyclerViewAdapter(list, MainActivity.this);
// set adapter to recyclerview
recyclerView.setAdapter(adapter);
}
public void getRetrofitArray(){
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(url)
.addConverterFactory(GsonConverterFactory.create())
.build();
RetrofitArrayAPI service = retrofit.create(RetrofitArrayAPI.class);
Call<List<Recipe>> call = service.getRecipeDetails();
call.enqueue(new Callback<List<Recipe>>() {
@Override
public void onResponse(Call<List<Recipe>> call, Response<List<Recipe>> response) {
Log.e("main ", " retrofit response "+ response.body().toString());
mListrecipe=response.body();
for (int i=0; i<response.body().size();i++){
Log.e("main ", " name "+ response.body().get(i).getName() + " serving "+
response.body().get(i).getServings());
list.add(new Model(Model.IMAGE_TYPE,response.body(), response.body().get(i).getName() ,
" Serving " +response.body().get(i).getServings()) );
}
adapter.notifyDataSetChanged();
}
@Override
public void onFailure(Call<List<Recipe>> call, Throwable t) {
Log.e("main ", " retrofit error "+ t.toString());
}
});
}
public static List<Recipe>getList(){
return mListrecipe;
}
}
我添加putExtra與關鍵值傳遞位置
public class RecyclerViewAdapter extends RecyclerView.Adapter {
private ArrayList<Model> dataset;
private Context mContext;
public RecyclerViewAdapter(ArrayList<Model> mlist, Context context) {
this.dataset = mlist;
this.mContext = context;
}
public static class ImageTypeViewHolder extends RecyclerView.ViewHolder{
ImageView imageView;
TextView title, subtitle;
public ImageTypeViewHolder(View itemView) {
super(itemView);
this.title = (TextView) itemView.findViewById(R.id.title);
this.subtitle = (TextView) itemView.findViewById(R.id.subtitle);
this.imageView=(ImageView)itemView.findViewById(R.id.imageview);
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.itemlist, parent, false);
return new ImageTypeViewHolder(view) ;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
Model object = dataset.get(position);
((ImageTypeViewHolder) holder).title.setText(object.title);
((ImageTypeViewHolder) holder).subtitle.setText(object.subtitle);
/// dataset.get(position)
((ImageTypeViewHolder) holder).title.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent=new Intent(mContext,SelectReceipe.class);
intent.putExtra("itempostion",position);
mContext.startActivity(intent);
}
});
((ImageTypeViewHolder) holder).subtitle.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent=new Intent(mContext,SelectReceipe.class);
intent.putExtra("itempostion",position);
mContext.startActivity(intent);
}
});
((ImageTypeViewHolder) holder).imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent=new Intent(mContext,SelectReceipe.class);
intent.putExtra("itempostion",position);
mContext.startActivity(intent);
}
});
}
@Override
public int getItemCount() {
return dataset.size() ;
}
}
這是2活動我通過了位置但我找不到價值logcat
public class SelectReceipe extends AppCompatActivity {
List<Recipe>sListRecipe;
public int itempostion;
private String TAG;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.selectreceipe);
sListRecipe=MainActivity.getList();
Intent i =getIntent();
itempostion= i.getExtras().getInt("itempostion");
Log.e(TAG,"itempostion"+String.valueOf(itempostion)+"valou"+sListRecipe.get(itempostion).getName().toString());
}
的logcat：
09-26 13:34:41.355 31852-31852/? D/dalvikvm: Late-enabling CheckJNI
09-26 13:34:42.459 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.view.Window$Callback.onProvideKeyboardShortcuts, referenced from method android.support.v7.view.WindowCallbackWrapper.onProvideKeyboardShortcuts
09-26 13:34:42.471 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve interface method 20343: Landroid/view/Window$Callback;.onProvideKeyboardShortcuts (Ljava/util/List;Landroid/view/Menu;I)V
09-26 13:34:42.471 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.view.WindowCallbackWrapper.onSearchRequested
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve interface method 20345: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.view.WindowCallbackWrapper.onWindowStartingActionMode
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve interface method 20349: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
09-26 13:34:42.479 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
09-26 13:34:42.483 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.widget.TintTypedArray.getChangingConfigurations
09-26 13:34:42.495 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 478: Landroid/content/res/TypedArray;.getChangingConfigurations()I
09-26 13:34:42.495 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
09-26 13:34:42.495 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.widget.TintTypedArray.getType
09-26 13:34:42.495 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 500: Landroid/content/res/TypedArray;.getType (I)I
09-26 13:34:42.495 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6e at 0x0008
09-26 13:34:42.695 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.widget.FrameLayout.startActionModeForChild, referenced from method android.support.v7.widget.ActionBarContainer.startActionModeForChild
09-26 13:34:42.695 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 20822: Landroid/widget/FrameLayout;.startActionModeForChild (Landroid/view/View;Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
09-26 13:34:42.699 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6f at 0x0002
09-26 13:34:42.735 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.view.ViewGroup.onRtlPropertiesChanged, referenced from method android.support.v7.widget.Toolbar.onRtlPropertiesChanged
09-26 13:34:42.735 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 20233: Landroid/view/ViewGroup;.onRtlPropertiesChanged (I)V
09-26 13:34:42.735 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6f at 0x0007
09-26 13:34:42.739 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.content.Context.getColorStateList, referenced from method android.support.v7.content.res.AppCompatResources.getColorStateList
09-26 13:34:42.743 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 292: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;
09-26 13:34:42.743 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
09-26 13:34:42.763 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawable
09-26 13:34:42.763 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 441: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
09-26 13:34:42.763 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
09-26 13:34:42.763 31852-31852/blueappsoftware.mybakingtips I/dalvikvm: Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawableForDensity
09-26 13:34:42.767 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve virtual method 443: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
09-26 13:34:42.767 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
09-26 13:34:42.771 31852-31852/blueappsoftware.mybakingtips E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering
09-26 13:34:42.771 31852-31852/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve instanceof 142 (Landroid/graphics/drawable/RippleDrawable;) in Landroid/support/v7/widget/AppCompatImageHelper;
09-26 13:34:42.771 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x20 at 0x000c
09-26 13:34:42.815 31852-31853/blueappsoftware.mybakingtips D/dalvikvm: GC_CONCURRENT freed 256K, 3% free 10939K/11271K, paused 18ms+1ms, total 27ms
09-26 13:34:42.815 31852-31852/blueappsoftware.mybakingtips D/dalvikvm: WAIT_FOR_CONCURRENT_GC blocked 4ms
09-26 13:34:42.911 31852-31852/blueappsoftware.mybakingtips D/libEGL: loaded /system/lib/egl/libEGL_genymotion.so
[ 09-26 13:34:42.931 31852:31852 D/ ]
HostConnection::get() New Host Connection established 0xb7f81e90, tid 31852
09-26 13:34:43.019 31852-31852/blueappsoftware.mybakingtips D/libEGL: loaded /system/lib/egl/libGLESv1_CM_genymotion.so
09-26 13:34:43.035 31852-31852/blueappsoftware.mybakingtips D/libEGL: loaded /system/lib/egl/libGLESv2_genymotion.so
09-26 13:34:43.111 31852-31852/blueappsoftware.mybakingtips W/EGL_genymotion: eglSurfaceAttrib not implemented
09-26 13:34:43.127 31852-31852/blueappsoftware.mybakingtips D/OpenGLRenderer: Enabling debug mode 0
09-26 13:34:43.183 31852-31852/blueappsoftware.mybakingtips D/OpenGLRenderer: TextureCache::get: create texture(0xb7fa1438): name, size, mSize = 1, 4096, 4096
09-26 13:34:43.339 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to find class referenced in signature (Ljava/nio/file/Path;)
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to find class referenced in signature ([Ljava/nio/file/OpenOption;)
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips I/dalvikvm: Could not find method java.nio.file.Files.newOutputStream, referenced from method okio.Okio.sink
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve static method 22787: Ljava/nio/file/Files;.newOutputStream (Ljava/nio/file/Path;[Ljava/nio/file/OpenOption;)Ljava/io/OutputStream;
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x71 at 0x000a
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to find class referenced in signature (Ljava/nio/file/Path;)
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to find class referenced in signature ([Ljava/nio/file/OpenOption;)
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips I/dalvikvm: Could not find method java.nio.file.Files.newInputStream, referenced from method okio.Okio.source
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips W/dalvikvm: VFY: unable to resolve static method 22786: Ljava/nio/file/Files;.newInputStream (Ljava/nio/file/Path;[Ljava/nio/file/OpenOption;)Ljava/io/InputStream;
09-26 13:34:43.343 31852-31877/blueappsoftware.mybakingtips D/dalvikvm: VFY: replacing opcode 0x71 at 0x000a
09-26 13:34:43.567 31852-31853/blueappsoftware.mybakingtips D/dalvikvm: GC_CONCURRENT freed 279K, 4% free 11121K/11527K, paused 24ms+10ms, total 38ms
09-26 13:34:44.079 31852-31852/blueappsoftware.mybakingtips E/main: retrofit response [[email protected], [email protected], [email protected], [email protected]]
09-26 13:34:44.079 31852-31852/blueappsoftware.mybakingtips E/main: name Nutella Pie serving 8
09-26 13:34:44.079 31852-31852/blueappsoftware.mybakingtips E/main: name Brownies serving 8
09-26 13:34:44.079 31852-31852/blueappsoftware.mybakingtips E/main: name Yellow Cake serving 8
09-26 13:34:44.079 31852-31852/blueappsoftware.mybakingtips E/main: name Cheesecake serving 8
09-26 13:34:44.119 31852-31853/blueappsoftware.mybakingtips D/dalvikvm: GC_CONCURRENT freed 217K, 4% free 11298K/11655K, paused 15ms+0ms, total 20ms
09-26 13:34:44.179 31852-31852/blueappsoftware.mybakingtips D/OpenGLRenderer: TextureCache::get: create texture(0xb7f36950): name, size, mSize = 9, 33856, 37952
09-26 13:34:48.955 31852-31852/blueappsoftware.mybakingtips W/EGL_genymotion: eglSurfaceAttrib not implemented
09-26 13:34:48.955 31852-31852/blueappsoftware.mybakingtips E/RecyclerView: No adapter attached; skipping layout
09-26 13:34:48.967 31852-31852/blueappsoftware.mybakingtips E/RecyclerView: No adapter attached; skipping layout
09-26 13:52:03.367 31852-31853/blueappsoftware.mybakingtips D/dalvikvm: GC_CONCURRENT freed 332K, 4% free 11375K/11847K, paused 6ms+1ms, total 16ms
09-26 14:16:49.627 31852-31853/blueappsoftware.mybakingtips D/dalvikvm: GC_CONCURRENT freed 426K, 5% free 11345K/11911K, paused 9ms+0ms, total 9ms