我正在尝试使用此代码通过whatsapp发送消息。我遇到的问题是，“方法getSherlockActivity（）未定义类型发送”。我应该重命名我的发送还是我需要导入一些东西？日食的唯一建议就是创造它。
import com.actionbarsherlock.app.SherlockActivity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.ContactsContract;
import android.widget.Toast;
public class Send extends SherlockActivity{
public void sendWhatsAppMessageTo(String whatsappid) {
Cursor c = getSherlockActivity().getContentResolver().query(ContactsContract.Data.CONTENT_URI,
new String[] { ContactsContract.Contacts.Data._ID }, ContactsContract.Data.DATA1 + "=?",
new String[] { whatsappid }, null);
c.moveToFirst();
Intent whatsapp = new Intent(Intent.ACTION_VIEW, Uri.parse("content://com.android.contacts/data/" + c.getString(0)));
c.close();
if (whatsapp != null) {
startActivity(whatsapp);
} else {
Toast.makeText(this, "WhatsApp not Installed", Toast.LENGTH_SHORT)
.show();
//download for example after dialog
Uri uri = Uri.parse("market://details?id=com.whatsapp");
Intent goToMarket = new Intent(Intent.ACTION_VIEW, uri);
}
}
}
编辑：删除getSherlockActivity（）后的Logcat输出是：
02-15 02:05:10.647: D/AndroidRuntime(2831): Shutting down VM
02-15 02:05:10.647: W/dalvikvm(2831): threadid=1: thread exiting with uncaught exception (group=0x40a151f8)
02-15 02:05:10.647: E/AndroidRuntime(2831): FATAL EXCEPTION: main
02-15 02:05:10.647: E/AndroidRuntime(2831): java.lang.RuntimeException: Unable to start activity ComponentInfo{de.wiers.whatsapp_api/de.wiers.whatsapp_api.MainActivity}: java.lang.NullPointerException
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread.access$600(ActivityThread.java:123)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.os.Handler.dispatchMessage(Handler.java:99)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.os.Looper.loop(Looper.java:137)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread.main(ActivityThread.java:4424)
02-15 02:05:10.647: E/AndroidRuntime(2831): at java.lang.reflect.Method.invokeNative(Native Method)
02-15 02:05:10.647: E/AndroidRuntime(2831): at java.lang.reflect.Method.invoke(Method.java:511)
02-15 02:05:10.647: E/AndroidRuntime(2831): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-15 02:05:10.647: E/AndroidRuntime(2831): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-15 02:05:10.647: E/AndroidRuntime(2831): at dalvik.system.NativeStart.main(Native Method)
02-15 02:05:10.647: E/AndroidRuntime(2831): Caused by: java.lang.NullPointerException
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:91)
02-15 02:05:10.647: E/AndroidRuntime(2831): at de.wiers.whatsapp_api.Send.sendWhatsAppMessageTo(Send.java:15)
02-15 02:05:10.647: E/AndroidRuntime(2831): at de.wiers.whatsapp_api.MainActivity.onCreate(MainActivity.java:15)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.Activity.performCreate(Activity.java:4492)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
02-15 02:05:10.647: E/AndroidRuntime(2831): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
02-15 02:05:10.647: E/AndroidRuntime(2831): ... 11 more
02-15 02:05:11.527: I/dalvikvm(2831): threadid=3: reacting to signal 3
02-15 02:05:11.537: I/dalvikvm(2831): Wrote stack traces to '/data/anr/traces.txt'
02-15 02:05:11.547: I/dalvikvm(2831): threadid=3: reacting to signal 3
02-15 02:05:11.547: I/dalvikvm(2831): Wrote stack traces to '/data/anr/traces.txt'
EDIT2：主文件：
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import de.wiers.whatsapp_api.Send;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Send snd = new Send();
snd.sendWhatsAppMessageTo("12345678@s.whatsapp.net");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}