eclipse 如何解决“No Activity found to handle Intent”错误
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How to solve "No Activity found to handle Intent" error
提问by shubh
android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.android.suven.Create_memo }
I just want to go from one activity to another but its giving me this error.
我只想从一项活动转到另一项活动，但它给了我这个错误。
my main activity code is as folllow
我的主要活动代码如下
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btn1 = (Button)findViewById(R.id.button1);
btn1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
try
{
Intent i=new Intent("com.android.suven.Create_memo");
startActivity(i);
}
catch ( ActivityNotFoundException e) {
e.printStackTrace();
}
}
});
btn2 = (Button)findViewById(R.id.button2);
btn2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v)
{
try
{
Intent i=new Intent("com.android.suven.Create_memo");
startActivity(i);
}
catch ( ActivityNotFoundException e) {
e.printStackTrace();
}
});
}
}
My logcat is like this:
我的 logcat 是这样的：
06-05 13:43:35.959: E/AndroidRuntime(275): FATAL EXCEPTION: main
06-05 13:43:35.959: E/AndroidRuntime(275): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.suven/com.android.suven.Create_memo}: java.lang.NullPointerException
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread.access00(ActivityThread.java:125)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.os.Handler.dispatchMessage(Handler.java:99)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.os.Looper.loop(Looper.java:123)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread.main(ActivityThread.java:4627)
06-05 13:43:35.959: E/AndroidRuntime(275): at java.lang.reflect.Method.invokeNative(Native Method)
06-05 13:43:35.959: E/AndroidRuntime(275): at java.lang.reflect.Method.invoke(Method.java:521)
06-05 13:43:35.959: E/AndroidRuntime(275): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-05 13:43:35.959: E/AndroidRuntime(275): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-05 13:43:35.959: E/AndroidRuntime(275): at dalvik.system.NativeStart.main(Native Method)
06-05 13:43:35.959: E/AndroidRuntime(275): Caused by: java.lang.NullPointerException
06-05 13:43:35.959: E/AndroidRuntime(275): at com.android.suven.Create_memo.onCreate(Create_memo.java:56)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-05 13:43:35.959: E/AndroidRuntime(275): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
06-05 13:43:35.959: E/AndroidRuntime(275): ... 11 more
06-05 13:43:39.199: I/Process(275): Sending signal. PID: 275 SIG: 9
回答by Chintan Raghwani
in your code-line
在您的代码行中
Intent i=new Intent("com.android.suven.Create_memo");
"com.android.suven.Create_memo"is taken as ACTION.
“com.android.suven.Create_memo”被当作动作。
Instead, you have to put
相反，你必须把
Intent i=new Intent(YourCurrentAivityName.this, Create_memo.class);
Also put
还放
<activity
android:name=".Create_memo" >
</activity>
in your AndroidManifest.xml file.
在您的 AndroidManifest.xml 文件中。
回答by Abhinai
This is NextActivity.java
这是 NextActivity.java
public class NextActivity extends Activity {
//Your member variable declaration here
// Called when the activity is first created.
@Override
public void onCreate(Bundle savedInstanceState) {
//Your code here
}
}
After creation of a new Activity, we have to register it in file ‘AndroidManifest.xml'. For registering we have to create an entry in ‘AndroidManifest.xml' as
创建新活动后，我们必须在文件“AndroidManifest.xml”中注册它。为了注册，我们必须在“AndroidManifest.xml”中创建一个条目作为
**<activity android:name=".NextActivity" android:label="@string/app_name"/>**
回答by Shrikant
Have you declared Create_memo activity in your manifest file? like:
您是否在清单文件中声明了 Create_memo 活动？喜欢：
<activity
android:name="com.android.suven.Create_memo" />
