我是Android的初学者，我遇到了以下问题。
当我尝试从我的主要活动开始第二个活动时
Intent intent = new Intent("com.myapp.secondActivity");
intent.setAction("com.whatever");
startActivity(intent);
在AndroidManifest.xml的第二个活动部分中声明此intent-filter
<intent-filter>
<action android:name="com.whatever"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
它有效。
但是，如果我尝试在strings.xml中输入字符串“com.whatever”并从那里使用它，就像这样：
Intent intent = new Intent("com.myapp.secondActivity");
intent.setAction(getString(R.string.secondActionIntent));
startActivity(intent);
和
<intent-filter>
<action android:name="@string/secondActionIntent"/>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
我的程序因异常而崩溃：
android.content.ActivityNotFoundException: No Activity found to handle Intent {....}
这是否按设计工作？我应该避免在AndroidManifest中调用“@string”吗？如果是，我在哪里可以找到它的文档？
异常的完整日志（活动和意图名称是原始名称，未按上述方式编辑）：
FATAL EXCEPTION: main
Process: com.deni.dechirer, PID: 10564
java.lang.IllegalStateException: Could not execute method for android:onClick
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:275)
at android.view.View.performClick(View.java:4785)
at android.view.View$PerformClick.run(View.java:19884)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5343)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:270)
at android.view.View.performClick(View.java:4785)
at android.view.View$PerformClick.run(View.java:19884)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5343)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.deni.dechirer.chargerPhotoBureau (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1872)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1568)
at android.app.Activity.startActivityForResult(Activity.java:3755)
at android.app.Activity.startActivityForResult(Activity.java:3716)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:784)
at android.app.Activity.startActivity(Activity.java:4036)
at android.app.Activity.startActivity(Activity.java:3998)
at com.deni.dechirer.MainActivity.envoyerVersBureau(MainActivity.java:120)
at com.deni.dechirer.MainActivity.prendrePhoto(MainActivity.java:100)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at android.support.v7.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:270)
at android.view.View.performClick(View.java:4785)
at android.view.View$PerformClick.run(View.java:19884)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5343)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:905)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:700)
答案 0 :(得分：0)
明确意图不需要采取行动。如果在应用程序中本地使用，则调用活动不需要在清单中声明Intent过滤器。 使用此：
void main(void)
{
R_MAIN_UserInit();
uart1Status = R_UART1_Receive(&RxBuf[0],1); // Prime UART1 Rx
while (1U)
{
//Check if byte received on UART
if (RxFlag)
{
// clear rx flag
RxFlag = 0U;
//Echo back the received character
TxBuf[0] = RxBuf[0];
//Send TX buffer, and specify how many characters to write
uart1Status = R_UART1_Send(TxBuf,1);
// re-Prime UART Rx
uart1Status = R_UART1_Receive(RxBuf,1);
}
//If a character has been transmitted
if (TxFlag)
{
// End of UART2 transmit
TxFlag = 0U; // clear tx flag
}
}
/***********************************************************************************************************************
* Function Name: R_UART1_Receive
* Description : This function receives UART1 data.
* Arguments : rx_buf -
* receive buffer pointer
* rx_num -
* buffer size
* Return Value : status -
* MD_OK or MD_ARGERROR
***********************************************************************************************************************/
MD_STATUS R_UART1_Receive(uint8_t * const rx_buf, uint16_t rx_num)
{
MD_STATUS status = MD_OK;
if (rx_num < 1U)
{
status = MD_ARGERROR;
}
else
{
g_uart1_rx_count = 0U;
g_uart1_rx_length = rx_num;
gp_uart1_rx_address = rx_buf;
}
return (status);
}
/***********************************************************************************************************************
* Function Name: R_UART1_Send
* Description : This function sends UART1 data.
* Arguments : tx_buf -
* transfer buffer pointer
* tx_num -
* buffer size
* Return Value : status -
* MD_OK or MD_ARGERROR
***********************************************************************************************************************/
MD_STATUS R_UART1_Send(uint8_t * const tx_buf, uint16_t tx_num)
{
MD_STATUS status = MD_OK;
if (tx_num < 1U)
{
status = MD_ARGERROR;
}
else
{
gp_uart1_tx_address = tx_buf;
g_uart1_tx_count = tx_num;
STMK1 = 1U; /* disable INTST1 interrupt */
TXD1 = *gp_uart1_tx_address;
gp_uart1_tx_address++;
g_uart1_tx_count--;
STMK1 = 0U; /* enable INTST1 interrupt */
}
return (status);
}