Java 从Android向php发送对象

我对Android非常陌生，我想将一些变量从我的Android应用程序传递到php页面。我使用了一个页面中的代码，并试图使其适应我的需要，但目前还没有传递变量。我想做的是，id为“button_wp”的按钮激活函数“run”。我使用的代码如下所示：

Android xml

<Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Go to webpage"
        android:id="@+id/button_wp"
        android:onClick="wp" />

php

$json = file_get_contents('php://input');
$obj = json_decode($json);
$precio = $obj->{'precio'};

调试后的错误：

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve interface method 16209: Landroid/view/Window$Callback;.onProvideKeyboardShortcuts (Ljava/util/List;Landroid/view/Menu;I)V

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve interface method 16211: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve interface method 16215: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 532: Landroid/content/res/TypedArray;.getChangingConfigurations ()I

08-18 04:28:02.021 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 554: Landroid/content/res/TypedArray;.getType (I)I

08-18 04:28:02.211 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 16639: Landroid/widget/FrameLayout;.startActionModeForChild (Landroid/view/View;Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;

08-18 04:28:02.271 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 495: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;

08-18 04:28:02.271 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 497: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;

08-18 04:28:02.271 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 321: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;

08-18 04:28:02.651 31463-31463/com.example.+++.+++E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering

08-18 04:28:02.651 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve instanceof 152 (Landroid/graphics/drawable/RippleDrawable;) in Landroid/support/v7/widget/AppCompatImageHelper;

08-18 04:35:38.731 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 16912: Landroid/widget/Spinner;.getPopupContext ()Landroid/content/Context;

08-18 04:35:38.731 31463-31463/com.example.+++.+++E/dalvikvm: Could not find class 'android.widget.ThemedSpinnerAdapter', referenced from method android.support.v7.widget.AppCompatSpinner$DropDownAdapter.<init>

08-18 04:35:38.731 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve instanceof 2085 (Landroid/widget/ThemedSpinnerAdapter;) in Landroid/support/v7/widget/AppCompatSpinner$DropDownAdapter;

08-18 04:37:23.001 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 196: Landroid/app/Notification$Builder;.setLocalOnly (Z)Landroid/app/Notification$Builder;

08-18 04:37:23.001 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 453: Landroid/content/pm/PackageManager;.getPackageInstaller ()Landroid/content/pm/PackageInstaller;

08-18 04:37:32.901 31463-31463/com.example.+++.+++W/dalvikvm: method Landroid/support/v7/widget/ListViewCompat;.lookForSelectablePosition incorrectly overrides package-private method with same name in Landroid/widget/ListView;

08-18 04:37:32.901 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 14245: Landroid/support/v7/widget/DropDownListView;.drawableHotspotChanged (FF)V

08-18 04:37:32.901 31463-31463/com.example.+++.+++W/dalvikvm: VFY: unable to resolve virtual method 15841: Landroid/view/View;.drawableHotspotChanged (FF)V

08-18 04:37:39.821 31463-31463/com.example.+++.+++W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.

08-18 04:28:02.021 31463-31463/com.example.++++++W/dalvikvm:VFY:无法解析接口方法16209:Landroid/view/Window$Callback；。onProvideKeyboardShortcuts（Ljava/util/List；Landroid/view/Menu；I）V
08-18 04:28:02.021 31463-31463/com.example.++++++W/dalvikvm:VFY:找不到签名中引用的类（Landroid/view/SearchEvent；）
08-18 04:28:02.021 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析接口方法16211:Landroid/view/Window$Callback；。onSearchRequested（Landroid/view/SearchEvent；）Z
08-18 04:28:02.021 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析接口方法16215:Landroid/view/Window$Callback；。OnWindowsStartingActionMode（Landroid/view/ActionMode$回调；I）Landroid/view/ActionMode；
08-18 04:28:02.021 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法532:Landroid/content/res/TypedArray；。getChangingConfigurations（）I
08-18 04:28:02.021 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法554:Landroid/content/res/TypedArray；。getType（I）I
08-18 04:28:02.211 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法16639:Landroid/widget/FrameLayout；。StartActionModelForChild（Landroid/view/view；Landroid/view/ActionMode$回调；I）Landroid/view/ActionMode；
08-18 04:28:02.271 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法495:Landroid/content/res/Resources；。getDrawable（ILandroid/content/res/Resources$Theme；）Landroid/graphics/drawable/drawable；
08-18 04:28:02.271 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法497:Landroid/content/res/Resources；。getDrawableForDensity（IILandroid/content/res/Resources$Theme；）Landroid/graphics/drawable/drawable；
08-18 04:28:02.271 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法321:Landroid/content/Context；。getColorStateList（I）Landroid/content/res/ColorStateList；
08-18 04:28:02.651 31463-31463/com.example.++++++E/dalvikvm:找不到从方法android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering引用的类“android.graphics.drawable.RippleDrawable”
08-18 04:28:02.651 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析Landroid/support/v7/widget/AppCompatImageHelper中152（Landroid/graphics/drawable/RippleDrawable；）的实例；
08-18 04:35:38.731 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法16912:Landroid/widget/Spinner；。getPopupContext（）Landroid/content/Context；
08-18 04:35:38.731 31463-31463/com.example.++++++E/dalvikvm:找不到从方法android.support.v7.widget.AppCompatSpinner$DropDownAdapter引用的类“android.widget.ThemedSpinnerAdapter”。
08-18 04:35:38.731 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析Landroid/support/v7/widget/AppCompatSpinner$DropDownAdapter中2085（Landroid/widget/ThemedSpinnerAdapter；）的实例；
08-18 04:37:23.001 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法196:Landroid/app/Notification$Builder；。setLocalOnly（Z）Landroid/app/Notification$Builder；
08-18 04:37:23.001 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法453:Landroid/content/pm/PackageManager；。getPackageInstaller（）Landroid/content/pm/PackageInstaller；
08-18 04:37:32.901 31463-31463/com。示例+++++W/dalvikvm:method Landroid/support/v7/widget/ListViewCompat；。lookForSelectablePosition错误地覆盖了Landroid/widget/ListView中同名的包私有方法；
08-18 04:37:32.901 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法14245:Landroid/support/v7/widget/DropDownListView；。可抽出热插销（FF）V
08-18 04:37:32.901 31463-31463/com.示例+++++W/dalvikvm:VFY:无法解析虚拟方法15841:Landroid/view/view；。可抽出热插销（FF）V
08-18 04:37:39.821 31463-31463/com.示例（+++++++W/InputEventReceiver:试图完成输入事件，但输入事件接收器已被释放。

---

感谢您抽出时间

如果我正确理解了您的问题，您正在尝试将数据发布到PHP页面。首先，我建议使用

ASyncTask

，因为它更容易理解，并且是在Android中运行后台任务的推荐方式

要将数据发布到PHP页面，可以使用

org.apache.http.client.methods.HttpPost

和

org.apache.http.client.

在我的应用程序中，我是这样做的，但我不完全确定这是否是正确的做法。这段代码是通用的，只是我如何对PHP脚本执行post请求的实现

class PostRequest extends ASyncTask<String, Void, String>{

    @Override
    protected String doInBackground(String... params){
        String data = "test data";

        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost("http://url.to.post.to");

        BasicNameValuePair dataPair = new BasicNameValuePair("data", data);

        List<NameValuePair> nameValuePairList = new ArrayList<>();

        nameValuePairList.add(dataPair);

        try{

            UrlEncodedFormEntity uefe = new UrlEncodedFormEntity(nameValuePairList);
            httpPost.setEntity(uefe);

            try {
                HttpResponse httpResponse = httpClient.execute(httpPost);

                InputStream inputStream = httpResponse.getEntitiy().getContent();


                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

                StringBuilder stringBuilder = new StringBuilder();

                String bufferedStrChunk = null;

                while((bufferedStrChunk = bufferedReader.readLine()) != null){
                    stringBuilder.append(bufferedStrChunk);
                }

                return stringBuilder.toString();

            } catch(ClientProtocolException cpe){
                Log.e("app", "Exception occurred: ", cpe);
            } catch(IOException e){
                Log.e("app", "Exception occurred: ", e);
            }
        } catch(UnsupportedEncodingException e){
            Log.e("app", "Exception occurred: ", e);
        }
        return null;
    }
}

class PostRequest扩展了异步任务{
@凌驾
受保护的字符串doInBackground（字符串…参数）{
String data=“测试数据”；
HttpClient HttpClient=新的DefaultHttpClient（）；
HttpPost HttpPost=新的HttpPost（“http://url.to.post.to");
BasicNameValuePair数据对=新的BasicNameValuePair（“数据”，数据）；
List nameValuePairList=新的ArrayList（）；
nameValuePairList.add（数据对）；
试一试{
UrlEncodedFormEntity uefe=新的UrlEncodedFormEntity（nameValuePairList）；
httpPost.setEntity（uefe）；
试一试{
HttpResponse HttpResponse=httpClient.execute（httpPost）；
InputStream InputStream=httpResponse.getEntitiy（）.getContent(
class PostRequest extends ASyncTask<String, Void, String>{

    @Override
    protected String doInBackground(String... params){
        String data = "test data";

        HttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost("http://url.to.post.to");

        BasicNameValuePair dataPair = new BasicNameValuePair("data", data);

        List<NameValuePair> nameValuePairList = new ArrayList<>();

        nameValuePairList.add(dataPair);

        try{

            UrlEncodedFormEntity uefe = new UrlEncodedFormEntity(nameValuePairList);
            httpPost.setEntity(uefe);

            try {
                HttpResponse httpResponse = httpClient.execute(httpPost);

                InputStream inputStream = httpResponse.getEntitiy().getContent();


                BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

                StringBuilder stringBuilder = new StringBuilder();

                String bufferedStrChunk = null;

                while((bufferedStrChunk = bufferedReader.readLine()) != null){
                    stringBuilder.append(bufferedStrChunk);
                }

                return stringBuilder.toString();

            } catch(ClientProtocolException cpe){
                Log.e("app", "Exception occurred: ", cpe);
            } catch(IOException e){
                Log.e("app", "Exception occurred: ", e);
            }
        } catch(UnsupportedEncodingException e){
            Log.e("app", "Exception occurred: ", e);
        }
        return null;
    }
}