我一直试图在手机启动时运行应用程序,并在按KeyCode.CameraButton
时最终运行应用程序。我正在使用一个名为BootReceiver
的类,继承自BroadcastReceiver
。这是我的班级:
namespace ColorPoint.Xamarin.XAndroid
{
[BroadcastReceiver]
[IntentFilter(new[] { Intent.ActionBootCompleted }, Priority = (int)IntentFilterPriority.LowPriority)]
public class BootReceiver : BroadcastReceiver
{
public override void OnReceive(Context context, Intent intent)
{
Intent serviceStart = new Intent(context, typeof(MainActivity));
context.StartActivity(serviceStart);
}
}
}
当广播收到时,应用重启。我从adb
命令提示符运行此命令以模拟启动和电话重启!
adb -s device-or-emulator-id shell am broadcast -a android.intent.action.BOOT_COMPLETED
这是我的清单文件,不确定它是否正确!
'<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="ColorPoint.Xamarin.XAndroid" android:installLocation="auto" android:versionCode="1" android:versionName="1.0">
<uses-sdk android:minSdkVersion="19" android:targetSdkVersion="19" />
<application android:label="Rexson Barcode Scanner" android:icon="@drawable/icon">
<receiver android:name=".BootReceiver">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>
</receiver>
</application>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.READ_INPUT_STATE" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
<uses-feature android:name="android.hardware.camera" />
<uses-feature android:name="android.hardware.camera.autofocus" />
<activity android:name="MainActivity" />
<activity android:name="com.google.zxing.client.android.CaptureActivity" android:exported="false" android:windowSoftInputMode="stateAlwaysHidden">
<intent-filter>
<action android:name="com.phonegap.plugins.barcodescanner.SCAN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</manifest>'
需要逐步完成这个步骤,但是无法很好地调试它,当我模拟启动时手机重置的方式非常糟糕!
我刚尝试手动重启,应用尝试启动,但说“不幸的是[myapp]已经停止工作”然后再次手机重启
似乎它试图打开但崩溃了immediatley,然后重新启动手机
从另一个例子中找到了这个但同样的事情,只需重新启动手机..
public override void OnReceive(Context context, Intent intent)
{
if (intent.Action == Intent.ActionBootCompleted)
{
bool autoRestart = false;
var sp = context.GetSharedPreferences("preferences", FileCreationMode.Private);
autoRestart = sp.GetBoolean("autoRestart", false);
if (autoRestart)
{
Intent serviceStart = new Intent(context, typeof(MainActivity));
serviceStart.AddFlags(ActivityFlags.NewTask);
context.StartActivity(serviceStart);
}
}
}
答案 0 :(得分:6)
您需要在意图中添加ActivityFlags.NewTask
标记,因为您要在活动上下文之外启动活动。
崩溃是因为启动接收器生成....
HSSFCellStyle cellStyle1 = workbook.createCellStyle();
cellStyle1.setFillForegroundColor(new HSSFColor.BLACK().getIndex());
cellStyle1.setFillBackgroundColor(new HSSFColor.RED().getIndex());
cellStyle1.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
for(int i=0;i < rowCount;i++){
sheet.getRow(i).setRowStyle(cellStyle1);
}
...
。
解决方案:
Android.Util.AndroidRuntimeException