我收到了这个android.util.AndroidRuntimeException: requestFeature() must be called before adding content错误.正如您在下面的代码中看到的那样,该requestWindowFeature(Window.FEATURE_NO_TITLE);行在代码行之前setContentView(R.layout.mainmenu);.这个onCreate()代码在我的每一项活动中都是相同的格式,直到现在我才从未遇到过麻烦.自从我更新到ADT 22以来,到处都出现了很多随机错误.我已经排除了很多这些错误,这是我最新的错误.
我该怎么做才能解决这个错误？
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.mainmenu);
logcat的
05-31 04:20:43.121: E/AndroidRuntime(14559): FATAL EXCEPTION: main
05-31 04:20:43.121: E/AndroidRuntime(14559): java.lang.RuntimeException: Unable to start activity ComponentInfo{matt.lyons.bibletrivia.lite/matt.lyons.bibletrivia.lite.MainMenu}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.app.ActivityThread.access$600(ActivityThread.java:141)
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.os.Handler.dispatchMessage(Handler.java:99)
05-31 04:20:43.121: E/AndroidRuntime(14559): at android.os.Looper.loop(Looper.java:137)
05-31 …android.util.AndroidRuntimeException: requestFeature() must be called before adding content
我使用时收到此错误
getActivity().getWindow().requestFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
来自片段.我想仅在此片段中更改操作栏样式.所以我无法设置它MainActivity.怎么解决这个？
我看到这个问题requestFeature()必须在添加内容之前调用它没有说明如何从片段中解决这个问题
我有对话框片段.我打算在活动和对话中使用这个片段.我重写onCreateDialog和onCreateView方法.这是编码.
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.interval_time_popup, null);
setup(view, false);
return view;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
View view = getActivity().getLayoutInflater().inflate(R.layout.interval_time_popup, null);
builder.setTitle("Interval Time");
builder.setView(view);
setup(view, true);
builder.setPositiveButton("Set", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
listener.setOnIntervalTime(hourNp.getValue(), minNp.getValue());
dismiss();
}
});
builder.setNegativeButton("Cancel", new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dismiss();
}
});
return builder.create();
}
我在活动类中使用这个片段.
SelectTimeIntervalDialogFragment fragment = new …android android-fragments android-dialog android-dialogfragment
我看到了这个问题,并且也这一个和其他一些人,但没有真正帮助了我.
我正在DialogFragment为我的列表视图构建一个快速操作,并尝试根据android开发指南设置自定义视图.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/white" >
<ImageView
android:id="@+id/quick_action_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="20dp"
android:scaleType="fitXY"
android:src="@drawable/windows1" />
<TextView
android:id="@+id/quick_action_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="@+id/quick_action_image"
android:layout_toRightOf="@+id/quick_action_image"
android:ellipsize="end"
android:singleLine="true"
android:text="Lilly"
android:textColor="#585858"
android:textSize="16sp" />
<TextView
android:id="@+id/quick_action_activity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/quick_action_image"
android:layout_toRightOf="@+id/quick_action_image"
android:text="Updated 4 minutes ago"
android:textColor="#a3a3a3"
android:textSize="15sp" />
<ImageButton
android:id="@+id/popup_grid_leave"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentLeft="true"
android:layout_below="@+id/quick_action_activity"
android:layout_margin="20dp"
android:layout_marginTop="30dp"
android:background="@color/transperent"
android:src="@drawable/ic_action_leave" />
<ImageButton
android:id="@+id/popup_grid_silence"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignBottom="@+id/popup_grid_leave"
android:layout_alignTop="@+id/popup_grid_leave"
android:layout_centerHorizontal="true"
android:background="@color/transperent"
android:src="@drawable/ic_action_silence" />
<ImageButton
android:id="@+id/popup_grid_mark_as_read"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignBottom="@+id/popup_grid_leave"
android:layout_alignParentRight="true" …我正在开发一个自定义相机应用程序.下面是我的Activity类.
public class MyCustomCam extends Activity {
private Camera mCamera;
private CameraPreview mPreview;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mCamera = getCameraInstance();
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);
}
public static Camera getCameraInstance(){
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
}
catch (Exception e){
// Camera is not available (in use or does not exist) …引起原因：android.util.AndroidRuntimeException：添加内容之前必须调用requestFeature()
这是我的代码，
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.requestWindowFeature(Window.FEATURE_SWIPE_TO_DISMISS);
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_main);
}}