它编译时没有错误,但我在活动崩溃后在运行时得到它:
java.lang.UnsupportedOperationException: This is not supported, use MenuItemCompat.getActionProvider()
at android.support.v7.internal.view.menu.MenuItemImpl.getActionProvider(MenuItemImpl.java:645)
at com.......Activity.onCreateOptionsMenu
代码行在onCreateOptionsMenu()
中shareProvider = (ShareActionProvider) item.getActionProvider();
它说要使用MenuItemCompat.getActionProvider(),但它在另一个导入中,我有minSdkVersion 15,targetSdkVersion 21
这是活动
import android.app.AlertDialog;
import android.bluetooth.BluetoothAdapter;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.NavUtils;
import android.support.v7.app.ActionBarActivity;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.CursorAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ShareActionProvider;
import android.widget.TextView;
import android.widget.Toast;
public class Activity extends ActionBarActivity implements AdapterView.OnItemLongClickListener
{
private ShareActionProvider shareProvider;
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
MenuItem item = menu.findItem(R.id.action_share);
shareProvider = (ShareActionProvider) item.getActionProvider();
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
Intent shareIntent = new Intent(Intent.ACTION_SEND)
.putExtra(Intent.EXTRA_TEXT, "text");
setShareIntent(shareIntent);
return true;
}
private void setShareIntent(Intent shareIntent) {
if (shareProvider != null)
shareProvider.setShareIntent(shareIntent);
}
}
菜单
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.......Activity">
<item android:id="@+id/action_share"
android:title="Share" app:showAsAction="ifRoom"
android:icon="@android:drawable/ic_menu_share"
android:actionProviderClass="android.widget.ShareActionProvider" />
</menu>
答案 0 :(得分:2)
使用ActionBarActivity
时,您必须使用android.support.v7.widget.ShareActionProvider代替android.widget.ShareActionProvider
:
<item android:id="@+id/action_share"
android:title="Share" app:showAsAction="ifRoom"
app:actionProviderClass="android.support.v7.widget.ShareActionProvider" />
然后使用MenuItemCompat.getActionProvider()
作为错误消息暗示。
请注意ShareActionProvider
只有在调用setShareIntent()
后才能点击 - 您应该尽快(onCreateOptionsMenu()
或在您要共享的内容加载时执行此操作/ selected / ready而不是onOptionsItemSelected()
。