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我对数组的 Intent 有疑问。我想将一个矩形数组发送到另一个包。我正在关注本教程。不幸的是,我仍然对 Intent 有疑问。所以我有课ActivityToSend。我想发送storePrintIMC到另一个包的另一个类(SamplePreferenceActivity)。

ActivityToSend班级:

public class ActivityToSend extends Activity {
    private Activity activity;
    private ArrayList<String[]> data;
    private static LayoutInflater inflater = null;
    public String[] inkLevels = new String[5];
    View message;
    String [][] storePrintIMC= new String [4][4];
    public static final String ARRAYS_COUNT = "com.Status.App.ARRAYS_COUNT";
    public static final String ARRAY_INDEX = "com.Status.App.ARRAY_INDEX"; 

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        final String data[][] = storePrintIMC; 
        Bundle bundle = new Bundle();
        int count = data.length; 
        bundle.putInt(ARRAYS_COUNT, count); 
        for (int i = 0; i < count; i++)
        { 
            bundle.putStringArray(ARRAY_INDEX + i, data[i]); 
        } 
        Intent intent = new Intent(this, SamplePreferenceActivity.class); 
        intent.putExtras(bundle);

        startActivity(intent);
    }
}

对于我使用的不同包中的第二个活动:

public class SamplePreferenceActivity extends PreferenceActivity {    
    private static final int DIALOG_READ_ME = 1;
    public String[] inkLevels = new String[5];

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Bundle bundle = getIntent().getExtras();
        if (bundle != null) {
            int count = bundle.getInt(ActivityToSend.ARRAYS_COUNT, 0);

            ArrayList<String[]> arrays = new ArrayList<String[]>(count);

            for (int i = 0; i < count; i++)
                arrays.add(bundle.getStringArray(ActivityToSmartWatch.ARRAY_INDEX + i));

            String[][] data = arrays.toArray(new String[][]{});
        }
    }
}

我还对 Android 清单进行了一些更改。对于第二个包,我放了:

<activity android:name=".SamplePreferenceActivity " android:label="@string/preference_activity_title">
<meta-data android:name="android.support.PARENT_ACTIVITY" android:value="com.PrinterStatus.AppLab.SamplePreferenceActivity " /> 
  - <intent-filter>
        <action android:name="android.intent.action.MAIN" /> 
    </intent-filter>
</activity>
<activity android:name="com.sonyericsson.extras.liveware.extension.controlsample.SamplePreferenceActivity" android:parentActivityName="com.PrinterStatus.AppLab.ActivityToSend" /> 
<service android:name="com.sonyericsson.extras.liveware.extension.controlsample.SampleExtensionService" /> 

我在第一个包中收到错误:

Intent intent = new Intent(this, SamplePreferenceActivity.class);

我不知道我必须改变什么。你有什么主意吗?

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1 回答 1

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由于SamplePreferenceActivity在不同的包中,您需要将该类导入ActivityToSend. 就像任何其他导入一样。从清单中的内容来看,您需要将其放在com.PrinterStatus.AppLab.ActivityToSend.java(与其他import语句一起)的顶部附近:

import com.sonyericsson.extras.liveware.extension.controlsample.SamplePreferenceActivity;

如果您使用的是 Eclipse,您可能可以使用 ctrl-shift-O 自动解析导入。

于 2013-09-01T20:12:09.737 回答