求救:package com.Activity;import android.app.Activity;
import android.widget.Button;
import android.widget.TextView;
import android.os.Bundle;public class ActivityActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView myTextView=(TextView)findViewById(R.id.myTextView);
Button myButton=(Button)findViewById(R.id.myTextView);
myTextView.setText("我");
myButton.setText("ha");
}?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Activity"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" /> <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".ActivityActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activity"/>
</application>
</manifest>
07-05 08:58:17.411: DEBUG/dalvikvm(108): GC freed 2087 objects / 101928 bytes in 216ms
07-05 08:58:19.111: INFO/ActivityManager(61): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.Activity/.ActivityActivity }
07-05 08:58:19.310: INFO/ActivityManager(61): Start proc com.Activity for activity com.Activity/.ActivityActivity: pid=231 uid=10028 gids={}
07-05 08:58:19.791: DEBUG/ddm-heap(231): Got feature list request
07-05 08:58:20.049: INFO/ARMAssembler(61): generated scanline__00000177:03515104_00000001_00000000 [ 73 ipp] (95 ins) at [0x33ad78:0x33aef4] in 893401 ns
07-05 08:58:20.150: INFO/ARMAssembler(61): generated scanline__00000077:03545404_00000004_00000000 [ 47 ipp] (67 ins) at [0x33aef8:0x33b004] in 2804107 ns
07-05 08:58:20.541: DEBUG/AndroidRuntime(231): Shutting down VM
07-05 08:58:20.550: WARN/dalvikvm(231): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
07-05 08:58:20.561: ERROR/AndroidRuntime(231): Uncaught handler: thread main exiting due to uncaught exception
07-05 08:58:20.580: ERROR/AndroidRuntime(231): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.Activity/com.Activity.ActivityActivity}: java.lang.ClassCastException: android.widget.TextView
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.os.Handler.dispatchMessage(Handler.java:99)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.os.Looper.loop(Looper.java:123)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.main(ActivityThread.java:4363)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at java.lang.reflect.Method.invokeNative(Native Method)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at java.lang.reflect.Method.invoke(Method.java:521)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at dalvik.system.NativeStart.main(Native Method)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): Caused by: java.lang.ClassCastException: android.widget.TextView
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.Activity.ActivityActivity.onCreate(ActivityActivity.java:15)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): ... 11 more
07-05 08:58:20.610: INFO/Process(61): Sending signal. PID: 231 SIG: 3
07-05 08:58:20.621: INFO/dalvikvm(231): threadid=7: reacting to signal 3
07-05 08:58:20.700: INFO/dalvikvm(231): Wrote stack trace to '/data/anr/traces.txt'
07-05 08:58:22.441: INFO/Process(231): Sending signal. PID: 231 SIG: 9
07-05 08:58:22.482: INFO/ActivityManager(61): Process com.Activity (pid 231) has died.
07-05 08:58:22.610: INFO/UsageStats(61): Unexpected resume of com.android.launcher while already resumed in com.Activity
07-05 08:58:22.690: ERROR/gralloc(61): [unregister] handle 0x3bd798 still locked (state=40000001)
07-05 08:58:22.961: WARN/InputManagerService(61): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44e2bd20
import android.widget.Button;
import android.widget.TextView;
import android.os.Bundle;public class ActivityActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
TextView myTextView=(TextView)findViewById(R.id.myTextView);
Button myButton=(Button)findViewById(R.id.myTextView);
myTextView.setText("我");
myButton.setText("ha");
}?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.Activity"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="7" /> <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".ActivityActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Activity"/>
</application>
</manifest>
07-05 08:58:17.411: DEBUG/dalvikvm(108): GC freed 2087 objects / 101928 bytes in 216ms
07-05 08:58:19.111: INFO/ActivityManager(61): Starting activity: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10200000 cmp=com.Activity/.ActivityActivity }
07-05 08:58:19.310: INFO/ActivityManager(61): Start proc com.Activity for activity com.Activity/.ActivityActivity: pid=231 uid=10028 gids={}
07-05 08:58:19.791: DEBUG/ddm-heap(231): Got feature list request
07-05 08:58:20.049: INFO/ARMAssembler(61): generated scanline__00000177:03515104_00000001_00000000 [ 73 ipp] (95 ins) at [0x33ad78:0x33aef4] in 893401 ns
07-05 08:58:20.150: INFO/ARMAssembler(61): generated scanline__00000077:03545404_00000004_00000000 [ 47 ipp] (67 ins) at [0x33aef8:0x33b004] in 2804107 ns
07-05 08:58:20.541: DEBUG/AndroidRuntime(231): Shutting down VM
07-05 08:58:20.550: WARN/dalvikvm(231): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
07-05 08:58:20.561: ERROR/AndroidRuntime(231): Uncaught handler: thread main exiting due to uncaught exception
07-05 08:58:20.580: ERROR/AndroidRuntime(231): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.Activity/com.Activity.ActivityActivity}: java.lang.ClassCastException: android.widget.TextView
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2496)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2512)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.access$2200(ActivityThread.java:119)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1863)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.os.Handler.dispatchMessage(Handler.java:99)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.os.Looper.loop(Looper.java:123)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.main(ActivityThread.java:4363)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at java.lang.reflect.Method.invokeNative(Native Method)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at java.lang.reflect.Method.invoke(Method.java:521)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at dalvik.system.NativeStart.main(Native Method)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): Caused by: java.lang.ClassCastException: android.widget.TextView
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at com.Activity.ActivityActivity.onCreate(ActivityActivity.java:15)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2459)
07-05 08:58:20.580: ERROR/AndroidRuntime(231): ... 11 more
07-05 08:58:20.610: INFO/Process(61): Sending signal. PID: 231 SIG: 3
07-05 08:58:20.621: INFO/dalvikvm(231): threadid=7: reacting to signal 3
07-05 08:58:20.700: INFO/dalvikvm(231): Wrote stack trace to '/data/anr/traces.txt'
07-05 08:58:22.441: INFO/Process(231): Sending signal. PID: 231 SIG: 9
07-05 08:58:22.482: INFO/ActivityManager(61): Process com.Activity (pid 231) has died.
07-05 08:58:22.610: INFO/UsageStats(61): Unexpected resume of com.android.launcher while already resumed in com.Activity
07-05 08:58:22.690: ERROR/gralloc(61): [unregister] handle 0x3bd798 still locked (state=40000001)
07-05 08:58:22.961: WARN/InputManagerService(61): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44e2bd20
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又是强制换类型异常Button myButton=(Button)findViewById(R.id.myTextView);