我有一个ImageButton
当我希望按下它以启动第二个Activity
时。第二项活动被称为"尘埃2"如我的android清单中所见
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="pete.smokesapp" >
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".homepage"
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=".Dust2"
android:label="@string/title_activity_dust2" >
</activity>
</application>
</manifest>
我尝试在网上关注指南但是现在我的应用程序在启动时崩溃了。
package pete.smokesapp;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
public class homepage extends ActionBarActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_homepage);
findViewById(R.id.imgDust2).setOnClickListener((View.OnClickListener) this);
}
public void imgDust2(View view) {
switch (view.getId()){
case R.id.imgDust2:
Toast.makeText(this, "Dust 2 Clicked", Toast.LENGTH_LONG ).show();
break;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_homepage, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
这也是我的主要活动,这是ImageButton
的活动,我也是新手,如果我看起来很笨,那就很抱歉。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fillViewport="true">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:weightSum="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Maps"
android:id="@+id/txtMaps"
android:layout_weight="0.44" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgDust2"
android:clickable="false"
android:src="@drawable/dust2"
android:layout_above="@+id/imgOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgInferno"
android:layout_below="@+id/txtOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp"
android:src="@drawable/inferno" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgOverpass"
android:src="@drawable/overpass"
android:layout_marginBottom="10dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgMirage"
android:clickable="false"
android:src="@drawable/mirage"
android:layout_above="@+id/imgOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgCache"
android:clickable="false"
android:src="@drawable/cache"
android:layout_above="@+id/imgOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp" />
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgNuke"
android:clickable="false"
android:src="@drawable/nuke"
android:layout_above="@+id/imgOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp" />
</LinearLayout>
</ScrollView>
</RelativeLayout>
答案 0 :(得分:1)
Android中有两种可用的方法,您可以从一个Activity转到另一个Activity。
1。使用button.setOnClickListener()
在xml
文件中创建一个按钮。
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button" />
现在为.class
文件中的按钮设置事件监听器
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//set the event you want to perform when button is clicked
//you can go to another activity in your app by creating Intent
Intent intent = new Intent(getApplicationContext, Activity2.class);
startActivity(intent);
}
});
2。使用<android:onClick="goNext">
将onClick作为您在xml
文件中创建的按钮的属性。
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
android:onClick="goNext" />
现在,在您的.class
文件中,将该按钮的事件定义为
goNext() {
Intent intent = new Intent(getApplicationContext, Activity2.class);
startActivity(intent);
}
答案 1 :(得分:0)
在您的第一个活动中执行此操作:
Button button = (Button) findViewById(R.id.imgDust2);
button.setOnClickListener(new View.OnClickListener () {
@Override
public void onClick(View v){
Intent intent = new Intent(v.getContext(), dust2.class);
startActivity(intent);
}
});
答案 2 :(得分:0)
尝试以下方法:
implements OnClickListener
添加到您的班级定义中:public class homepage extends ActionBarActivity implements OnClickListener
findViewById(R.id.imgDust2).setOnClickListener((View.OnClickListener) this);
更改为findViewById(R.id.imgDust2).setOnClickListener(this);
答案 3 :(得分:0)
将onClick设置为xml imageView并输入方法的名称:
<ImageButton
android:layout_width="350dp"
android:layout_height="150dp"
android:id="@+id/imgDust2"
android:clickable="false"
android:src="@drawable/dust2"
android:layout_above="@+id/imgOverpass"
android:layout_alignLeft="@+id/imgOverpass"
android:layout_alignStart="@+id/imgOverpass"
android:layout_marginBottom="10dp"
android:onClick="imgDust2"/>