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我嘗試在Android Studio中對自定義視圖進行編碼。到目前爲止這麼神。保存自定義視圖的實例
一切工作正常，除了保存視圖的實例。
視圖包含4個元素
Linear Layout（什麼包含2個TextViews）ImageView
旋轉屏幕或按返回並重新打開應用程序後，該ImageView不保存它是狀態/圖像。它恢復的是默認的圖像！
我嘗試過多種方式，但沒有什麼作用。
的onSaveInstanceState()和onRestoreInstanceState(Parcelable)從不叫，我不知道爲什麼:(
希望你能幫助我
#edit：添加問題 GIF of Problem
的GIF
以下是我的代碼到目前爲止：
package de.codersgen.activitycontrol;
import android.content.Context;
import android.os.Bundle;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* Created by Ben Ny on 21.02.2017.
*/
public class ActivityView extends LinearLayout {
private Context context;
private static String STATE_SUPER_CLASS = "ActivitySuperClass";
private static String STATE_HEADER_TEXT = "HeaderText";
private static String STATE_INFO_TEXT = "InfoText";
private static String STATE_STATUS_IMAGE = "StatusImage";
private LinearLayout mTextContainer;
private TextView mHeaderText;
private TextView mInfoText;
private ImageView mStatusImage;
private int state = 0;
private int[] stateImages = {
R.drawable.infosign_black_24dp,
R.drawable.check_black_24dp
};
public ActivityView(Context context) {
super(context);
this.context = context;
initializeViews(context);
}
public ActivityView(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
initializeViews(context);
}
public ActivityView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.context = context;
initializeViews(context);
}
private void initializeViews(Context context) {
LayoutInflater inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.container_view, this);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
mTextContainer = (LinearLayout) this
.findViewById(R.id.textContainer);
mHeaderText = (TextView) this
.findViewById(R.id.headerText);
mInfoText = (TextView) this
.findViewById(R.id.infoText);
mStatusImage = (ImageView) this
.findViewById(R.id.statusImage);
mStatusImage
.setBackgroundResource(android.R.drawable.ic_media_next);
}
@Override
protected Parcelable onSaveInstanceState() {
super.onSaveInstanceState();
Toast.makeText(context, "SAVE", Toast.LENGTH_SHORT).show();
Bundle bundle = new Bundle();
bundle.putParcelable(STATE_SUPER_CLASS,
super.onSaveInstanceState());
bundle.putString(STATE_HEADER_TEXT, mHeaderText.getText().toString());
bundle.putString(STATE_INFO_TEXT, mInfoText.getText().toString());
bundle.putInt(STATE_STATUS_IMAGE, state);
return bundle;
}
@Override
protected void onRestoreInstanceState(Parcelable state) {
if (state instanceof Bundle) {
Bundle bundle = (Bundle) state;
super.onRestoreInstanceState(bundle.getParcelable(STATE_SUPER_CLASS));
setHeaderText("TEST");
setInfotext(bundle.getString(STATE_INFO_TEXT));
if (bundle.getInt(STATE_STATUS_IMAGE) == 1)
setStatusFinish();
else
setStatusUnfinished();
}
else {
super.onRestoreInstanceState(state);
}
}
@Override
protected void dispatchSaveInstanceState(SparseArray<Parcelable> container) {
super.dispatchFreezeSelfOnly(container);
}
@Override
protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) {
super.dispatchThawSelfOnly(container);
}
public String getHeaderText() {
mHeaderText = (TextView) this
.findViewById(R.id.headerText);
return mHeaderText.getText().toString();
}
public void setHeaderText(String text) {
mHeaderText = (TextView) this
.findViewById(R.id.headerText);
mHeaderText.setText(text);
}
public String getInfoText() {
mInfoText = (TextView) this
.findViewById(R.id.infoText);
return mInfoText.getText().toString();
}
public void setInfotext(String text) {
mInfoText = (TextView) this
.findViewById(R.id.infoText);
mInfoText.setText(text);
}
public void setStatusUnfinished() {
mStatusImage = (ImageView) this
.findViewById(R.id.statusImage);
state = 0;
mStatusImage.setImageResource(R.drawable.infosign_black_24dp);
}
public void setStatusFinish() {
mStatusImage = (ImageView) this
.findViewById(R.id.statusImage);
state = 1;
mStatusImage.setImageResource(R.drawable.check_black_24dp);
}
public void setStatusOnClickListener(OnClickListener listener) {
mStatusImage = (ImageView) this
.findViewById(R.id.statusImage);
mStatusImage.setOnClickListener(listener);
}
}
編輯數字2：加入我的CustomView的XML
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="@+id/textContainer"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1">
<TextView
android:id="@+id/headerText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:textColor="@android:color/black"
android:text="Example Header"
android:textSize="19sp">
</TextView>
<TextView
android:id="@+id/infoText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="@android:color/holo_red_dark"
android:paddingLeft="10dp"
android:paddingBottom="3dp"
android:text="Info Header"
android:textSize="12sp">
</TextView>
</LinearLayout>
<ImageView
android:id="@+id/statusImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:padding="5dp"
android:src="@drawable/add_black_24dp"
android:layout_weight="0.001">
</ImageView>
</merge>
我不不知道爲什麼要創建自定義視圖而不是使用RecyclerView或ListView。 – myatmins
檢查[this]（http://stackoverflow.com/a/3542895/5993410） –
我添加視圖不在設計器中。我添加他們，而我的應用程序是運行。所以控制這個原因更容易。 @AtefHares這不幫助我。因爲Funcions從未被調用過。 :( –