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我有一個TabHost應用程序與4個選項卡。Android的TabHost /後退按鈕
標籤1 列表A>列表B>視圖
標籤2 相機活性的啓動相機和閃光燈的onCreate
標籤3 列表C>查看
標籤4 視圖d>查看E
因此，當我第一次啓動應用程序時，我可以在沒有任何問題的情況下來回訪問不同的標籤頁。但是，一旦我啓動了Tab 2（攝像機標籤），並從那裏進入其他標籤，然後沿着堆疊進入，當我按下後退按鈕時，即使我不在標籤2（即列表B中，按回來按鈕和相機開始，即使我只是回到列表A）...當我再次進入Tab 2時，應用程序將崩潰（對不起，Android相機遇到問題...等）
誰能告訴我問題是什麼？下面是我TabHost活動
package com.myapp.appname;
import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.TabHost;
import android.widget.TextView;
import android.view.Window;
public class MainActivity extends TabActivity {
/** Called when the activity is first created. */
private TabHost tabHost;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(null);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.top_titlebar);
setTabs();
}
private void setTabs() {
tabHost = getTabHost();
listTab(R.string.tab_1, R.drawable.ic_tab_1);
cameraTab(R.string.tab_2, R.drawable.ic_tab_2);
list2Tab(R.string.tab_3, R.drawable.ic_tab_3);
viewTab(R.string.tab_4, R.drawable.ic_tab_4);
}
private void listTab(int labelId, int drawableId) {
Intent intent = new Intent(this,ListActivity.class);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
}
private void cameraTab(int labelId, int drawableId) {
Intent intent = new Intent(this,CameraActivity.class);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
}
private void list2Tab(int labelId, int drawableId) {
Intent intent = new Intent(this,List2Activity.class);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
}
private void viewTab(int labelId, int drawableId) {
Intent intent = new Intent(this,ViewActivity.class);
TabHost.TabSpec spec = tabHost.newTabSpec("tab" + labelId);
View tabIndicator = LayoutInflater.from(this).inflate(R.layout.tab_indicator, getTabWidget(), false);
TextView title = (TextView) tabIndicator.findViewById(R.id.title);
title.setText(labelId);
ImageView icon = (ImageView) tabIndicator.findViewById(R.id.icon);
icon.setImageResource(drawableId);
spec.setIndicator(tabIndicator);
spec.setContent(intent);
tabHost.addTab(spec);
}
}