大家好，我正在嘗試制作一個帶有導航抽屜的應用程序，并且能夠在其中一個抽屜中擁有可選擇的聯系人，但它一直崩潰。我構建的應用程序非常適合顯示聯系人。當我開始嘗試實現點擊聯系人以導航到另一個包含聯系信息的 Fragment 時，應用程序無法啟動。非常感謝任何幫助，甚至為我指明正確的方向。主要活動 Java 片段import android.support.v4.app.FragmentTransaction;import android.os.Bundle;import android.support.design.widget.NavigationView;import android.support.v4.view.GravityCompat;import android.support.v4.widget.DrawerLayout;import android.support.v7.app.ActionBarDrawerToggle;import android.support.v7.app.AppCompatActivity;import android.support.v7.widget.Toolbar;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import com.nostra13.universalimageloader.core.ImageLoader;import com.example.v1z0.assignments.Utils.*;public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener { private static final String TAG = "MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main_activity); Log.d(TAG, "onCreate: started"); initImageLoader(); init(); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); ActionBarDrawerToggle toggle = new ActionBarDrawerToggle( this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); drawer.addDrawerListener(toggle); toggle.syncState(); NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); navigationView.setNavigationItemSelectedListener(this); } private void initImageLoader() { UniversalImageLoader universalImageLoader = new UniversalImageLoader(MainActivity.this); ImageLoader.getInstance().init(universalImageLoader.getConfig()); }
2 回答
慕絲7291255
TA貢獻1859條經驗 獲得超6個贊
在init()MainActivity 類文件的方法中，您引用了錯誤的資源 ID。
private void init()
{
{
ViewContactsFragment fragment = new ViewContactsFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_frame, fragment);//not R.id.fragment_container
transaction.addToBackStack(null);
transaction.commit();
}
}
絕地無雙
TA貢獻1946條經驗 獲得超4個贊
除了navylover的回答。我還在 ViewContactFragment 中更改了 Fragment_container 并且它起作用了
contactsList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id)
{
Log.d(TAG, "onClick: navigating to contact" + (R.string.contact_fragment));
ContactFragment fragment = new ContactFragment();
FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.content_frame, fragment);
transaction.addToBackStack(getString(R.string.edit_contact_fragment));
Log.d(TAG, "onClick: fragment contentFrame" );
transaction.commit();
}
});
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