Android 安卓获取listview项onClick内部按钮到新的子片段

我有一个带有

行

项列表视图的片段。

行

仅存在于am

ImageView中

fragment_1.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/fragment_1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Fragment1">

    <ListView
        android:id="@+id/list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:divider="#b5b5b5"
        android:dividerHeight="1dp"
        android:listSelector="@drawable/list_selector"/>

</RelativeLayout>

现在我想在

行中打开一个新片段
fragment_2
。此片段具有相同的播放按钮，并且必须播放相同的唱片

fragment_2.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/fragment_audio"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Fragment2">

    <!-- Play Button. -->
    <ImageView
        android:id="@+id/play_button"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/ic_play"/>

</RelativeLayout>

片段之间的通信应该通过相关的活动来完成。您可以使用这个接口。它将成为他们之间的契约和桥梁

让我们有以下组件：

活动承载片段并允许片段通信

片段将发送数据的第一个片段

片段B第二个片段，它将从片段A接收数据

FragmentA的实现是：

public class FragmentA extends Fragment {
  DataPassListener mCallback;
  public interface DataPassListener{
    public void passData(String data);
  }
  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    // Make sure that container activity implement the callback interface
    try {
      mCallback = (DataPassListener)activity;
    } catch (ClassCastException e) {
      throw new ClassCastException(activity.toString()
            + " must implement DataPassListener");
    }
  }
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
    // Suppose that when a button clicked second FragmentB will be inflated
    // some data on FragmentA will pass FragmentB
    // Button passDataButton = (Button).........
    passDataButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        if (view.getId() == R.id.passDataButton) {
          mCallback.passData("Text to pass FragmentB");
        }
      }
    });
  }
}

public class MainActivity extends ActionBarActivity implements DataPassListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    if (findViewById(R.id.container) != null) {
        if (savedInstanceState != null) {
            return;
        }
        getFragmentManager().beginTransaction()
                .add(R.id.container, new FragmentA()).commit();
    }
}
@Override
public void passData(String data) {
    FragmentB fragmentB = new FragmentB ();
    Bundle args = new Bundle();
    args.putString(FragmentB.DATA_RECEIVE, data);
    fragmentB .setArguments(args);
    getFragmentManager().beginTransaction()
        .replace(R.id.container, fragmentB )
        .commit();
}
}

public class FragmentB extends Fragment{
final static String DATA_RECEIVE = "data_receive";
TextView showReceivedData;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_B, container, false);
    showReceivedData = (TextView) view.findViewById(R.id.showReceivedData);
}
@Override
public void onStart() {
    super.onStart();
    Bundle args = getArguments();
    if (args != null) {
        showReceivedData.setText(args.getString(DATA_RECEIVE));
    }
}

主要活动实施是：

public class FragmentA extends Fragment {
  DataPassListener mCallback;
  public interface DataPassListener{
    public void passData(String data);
  }
  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    // Make sure that container activity implement the callback interface
    try {
      mCallback = (DataPassListener)activity;
    } catch (ClassCastException e) {
      throw new ClassCastException(activity.toString()
            + " must implement DataPassListener");
    }
  }
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
    // Suppose that when a button clicked second FragmentB will be inflated
    // some data on FragmentA will pass FragmentB
    // Button passDataButton = (Button).........
    passDataButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        if (view.getId() == R.id.passDataButton) {
          mCallback.passData("Text to pass FragmentB");
        }
      }
    });
  }
}

public class MainActivity extends ActionBarActivity implements DataPassListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    if (findViewById(R.id.container) != null) {
        if (savedInstanceState != null) {
            return;
        }
        getFragmentManager().beginTransaction()
                .add(R.id.container, new FragmentA()).commit();
    }
}
@Override
public void passData(String data) {
    FragmentB fragmentB = new FragmentB ();
    Bundle args = new Bundle();
    args.putString(FragmentB.DATA_RECEIVE, data);
    fragmentB .setArguments(args);
    getFragmentManager().beginTransaction()
        .replace(R.id.container, fragmentB )
        .commit();
}
}

public class FragmentB extends Fragment{
final static String DATA_RECEIVE = "data_receive";
TextView showReceivedData;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_B, container, false);
    showReceivedData = (TextView) view.findViewById(R.id.showReceivedData);
}
@Override
public void onStart() {
    super.onStart();
    Bundle args = getArguments();
    if (args != null) {
        showReceivedData.setText(args.getString(DATA_RECEIVE));
    }
}

FragmentB的实现是：

public class FragmentA extends Fragment {
  DataPassListener mCallback;
  public interface DataPassListener{
    public void passData(String data);
  }
  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    // Make sure that container activity implement the callback interface
    try {
      mCallback = (DataPassListener)activity;
    } catch (ClassCastException e) {
      throw new ClassCastException(activity.toString()
            + " must implement DataPassListener");
    }
  }
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
    Bundle savedInstanceState) {
    // Suppose that when a button clicked second FragmentB will be inflated
    // some data on FragmentA will pass FragmentB
    // Button passDataButton = (Button).........
    passDataButton.setOnClickListener(new OnClickListener() {
      @Override
      public void onClick(View v) {
        if (view.getId() == R.id.passDataButton) {
          mCallback.passData("Text to pass FragmentB");
        }
      }
    });
  }
}

public class MainActivity extends ActionBarActivity implements DataPassListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    
    if (findViewById(R.id.container) != null) {
        if (savedInstanceState != null) {
            return;
        }
        getFragmentManager().beginTransaction()
                .add(R.id.container, new FragmentA()).commit();
    }
}
@Override
public void passData(String data) {
    FragmentB fragmentB = new FragmentB ();
    Bundle args = new Bundle();
    args.putString(FragmentB.DATA_RECEIVE, data);
    fragmentB .setArguments(args);
    getFragmentManager().beginTransaction()
        .replace(R.id.container, fragmentB )
        .commit();
}
}

public class FragmentB extends Fragment{
final static String DATA_RECEIVE = "data_receive";
TextView showReceivedData;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_B, container, false);
    showReceivedData = (TextView) view.findViewById(R.id.showReceivedData);
}
@Override
public void onStart() {
    super.onStart();
    Bundle args = getArguments();
    if (args != null) {
        showReceivedData.setText(args.getString(DATA_RECEIVE));
    }
}


这份文件提供了详细的信息，你可以浏览一下

在您的情况下，您可以应用这种方式在两个片段之间进行通信。
我建议您编辑您的问题，并清楚地说明您的问题。也可以发布代码而不是图像。@AjayP.Prajapati很抱歉，我在上传代码时遇到了问题，但现在一切正常：）问题是否有任何不清楚的地方？在我的情况下，如何提取
文本以传递碎片b
。我想让它通过我的唱片所在的路径，但我只有一次点击来播放这张唱片。如何保存每行listview的路径字符串。在我的问题中，这个字符串应该是
record
。正如您在示例中看到的，您可以使用bundle传递值，并在需要的地方提取它。在示例中，我将文本从FragmentA传递到FragmentB。但我的问题是，我不知道在哪里为每个ListView行保存这个字符串。可能在按行位置访问的列表中？或者，我也可以为每个行视图设置一个隐藏的文本视图。是的，您可以传递位置id（假设您的行中附加了字符串-这可能/可能来自API/Internet/local storage到您的listView）来跟踪它，并将其传递给fragmentB。