Question

我需要一个解决方案！ addView（）中的错误我不知道答案.....

我想使用之前的视图

更改布局

我需要帮助！

图表---- https://github.com/PhilJay/MPAndroidChart

流程：com.example.tiago.alsrm_android，PID：23337 java.lang.IllegalStateException：指定的子级已有父级。您必须首先在孩子的父母上调用removeView（）。在android.view.ViewGroup.addViewInner（ViewGroup.java:3784）在android.view.ViewGroup.addView（ViewGroup.java:3637）在android.view.ViewGroup.addView（ViewGroup.java:3582）在android.view.ViewGroup.addView（ViewGroup.java:3558）在com.example.tiago.alsrm_android.Fragment.EDA_Fragment.onConfigurationChanged（EDA_Fragment.java:174）

公共类EDA_Fragment扩展了Fragment {

private Intent intentService;
private Chart chart = null;
private View fragmentRootContainer;

@Override
public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    if(fragmentRootContainer == null) {
        fragmentRootContainer = inflater.inflate(R.layout.activity_exam, container, false);

        if (chart == null)
            chart = new Chart((LineChart) fragmentRootContainer.findViewById(R.id.chart), EDA, 1023f, 1f);


    return fragmentRootContainer;
}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    setRetainInstance(true);
}

@Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);

    LayoutInflater inflater = LayoutInflater.from(getActivity());
    ViewGroup viewGroup = (ViewGroup) getView();
    viewGroup.removeAllViewsInLayout();

    // Checks the orientation of the screen
    if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {

        View view = inflater.inflate(R.layout.activity_exam, null);

        LineChart lineChart = (LineChart)view.findViewById(R.id.chart);
        lineChart.addView(chart.getChart());


    } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){

        View view = inflater.inflate(R.layout.activity_exam, null);

        LineChart lineChart = (LineChart)view.findViewById(R.id.chart);
        lineChart.addView(chart.getChart());

    }
}

}

Answer 1

------ --------第一

在AndroidManifest中添加此内容

android:name=".Activity.EDA_Activity"
android:configChanges="orientation"

------第二----------

  in layout PORTRAIT add this -> android:orientation="vertical"

  in layout LANDSCAPE add this ->  android:orientation="horizontal"

--------第三-----------

public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);

    LayoutInflater inflater = LayoutInflater.from(getActivity());
    LinearLayout linearLayout = (LinearLayout) getView();
    if(linearLayout != null)
        linearLayout.removeAllViewsInLayout();

    // Checks the orientation of the screen
    if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {

        ViewGroup parentViewGroup = (ViewGroup)chart.getChart().getParent();
        if (parentViewGroup != null)
            parentViewGroup.removeView(chart.getChart());

        fragmentRootContainer = inflater.inflate(R.layout.activity_exam, linearLayout, true);
        LineChart lineChart = (LineChart) fragmentRootContainer.findViewById(R.id.chart);
        lineChart.addView(chart.getChart());
    }
    else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){

        ViewGroup parentViewGroup = (ViewGroup)chart.getChart().getParent();
        if (parentViewGroup != null)
            parentViewGroup.removeView(chart.getChart());

        fragmentRootContainer = inflater.inflate(R.layout.activity_exam, linearLayout, true);
        inflater.inflate(R.layout.activity_exam, linearLayout, false);

        LineChart lineChart = (LineChart) fragmentRootContainer.findViewById(R.id.chart);
        lineChart.addView(chart.getChart());
    }
}

在方向上更改片段布局

1 个答案: