刚刚接触Android 被intent难住了 望高手指点 我在AndroidWidgetDemoActivity里面设置了一个按钮 跳转到另一个名为TextViewActivity的Activity里 TextViewActivity里有一个TextView 代码如下:AndroidWidgetDemoActivity.java
package com.widgetdeom;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class AndroidWidgetDemoActivity extends Activity {
/** Called when the activity is first created.
* @return */
private void find_and_modify_button(){
Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(button_listener);
}
private Button.OnClickListener button_listener = new Button.OnClickListener(){
public void onClick(View v){
setTitle("Oh I was Clicked!");
}
};
private Button.OnClickListener text_view_listener = new Button.OnClickListener(){
public void onClick(View v){
Intent intent = new Intent();
intent.setClass(AndroidWidgetDemoActivity.this,TextViewActivity.class);
startActivity(intent);
}
};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
find_and_modify_button();
Button text_view_button = (Button)findViewById(R.id.text_view_button);
text_view_button.setOnClickListener(text_view_listener);
}
}main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="this is button"
/>
<Button
android:id="@+id/text_view_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text_View"
/>
</LinearLayout>TextViewActivity.javapackage com.widgetdeom;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class TextViewActivity extends Activity{ public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("This is TextView");
setContentView(R.layout.text);
}
}text.xml
<?xml version="1.0" encoding="utf-8"?>
<LinerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/text_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#ffffff"
android:padding="10dip"
android:background="#cc0000"
android:text="This is TextView,you can input info"
/>
</LinerLayout>AndroidManifet.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.widgetdeom"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" /> <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".AndroidWidgetDemoActivity"
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=".TextViewActivity"></activity>
</application>
</manifest>
package com.widgetdeom;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class AndroidWidgetDemoActivity extends Activity {
/** Called when the activity is first created.
* @return */
private void find_and_modify_button(){
Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(button_listener);
}
private Button.OnClickListener button_listener = new Button.OnClickListener(){
public void onClick(View v){
setTitle("Oh I was Clicked!");
}
};
private Button.OnClickListener text_view_listener = new Button.OnClickListener(){
public void onClick(View v){
Intent intent = new Intent();
intent.setClass(AndroidWidgetDemoActivity.this,TextViewActivity.class);
startActivity(intent);
}
};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
find_and_modify_button();
Button text_view_button = (Button)findViewById(R.id.text_view_button);
text_view_button.setOnClickListener(text_view_listener);
}
}main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="this is button"
/>
<Button
android:id="@+id/text_view_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Text_View"
/>
</LinearLayout>TextViewActivity.javapackage com.widgetdeom;import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class TextViewActivity extends Activity{ public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setTitle("This is TextView");
setContentView(R.layout.text);
}
}text.xml
<?xml version="1.0" encoding="utf-8"?>
<LinerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/text_view"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textSize="16sp"
android:textColor="#ffffff"
android:padding="10dip"
android:background="#cc0000"
android:text="This is TextView,you can input info"
/>
</LinerLayout>AndroidManifet.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.widgetdeom"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="10" /> <application android:icon="@drawable/icon" android:label="@string/app_name">
<activity android:name=".AndroidWidgetDemoActivity"
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=".TextViewActivity"></activity>
</application>
</manifest>
LinearLayout写成了<LinerLayout>
这个地方写错了,应该编译不过的吧