Android 应用程序保持强制关闭
每次我尝试运行此代码时，应用程序强制关闭Android 应用程序保持强制关闭,android,contacts,android-contacts,Android,Contacts,Android Contacts,每次我尝试运行此代码时，应用程序强制关闭 package com.test.sms; import android.app.Activity; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.provider.ContactsContract.Contacts; public class SMSLookupActivity extends Acti
package com.test.sms;
import android.app.Activity;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract.Contacts;
public class SMSLookupActivity extends Activity {
private String lookupKey;
/** Called when the activity is first created. */
@SuppressWarnings("unused")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Uri lookupUri = Uri.withAppendedPath(Contacts.CONTENT_LOOKUP_URI, lookupKey);
Cursor c = getContentResolver().query(lookupUri, new String[]{Contacts.DISPLAY_NAME}, lookupKey, null, lookupKey );
try {
c.moveToFirst();
String displayName = c.getString(0);
} finally {
c.close();
}
}
}
<uses-permission android:name="android.permission.READ_CONTACTS" />