前言:
现在同学们对“java点击按钮跳转界面”都比较讲究,同学们都想要知道一些“java点击按钮跳转界面”的相关文章。那么小编在网上收集了一些关于“java点击按钮跳转界面””的相关内容,希望姐妹们能喜欢,我们快快来了解一下吧!作者:韩茹
公司:程序咖(北京)科技有限公司
鸿蒙巴士专栏作家
一、同Page的AbilitySlice之间的跳转1.1 present
当发起导航的AbilitySlice和导航目标的AbilitySlice处于同一个Page时,可以通过present()方法实现导航。
@Overridebrprotected void onStart(Intent intent) {brbr ...br Button button = ...;br button.setClickedListener(listener -> present(new TargetSlice(), new Intent()));br ...brbr}
这里的present()方法:
// 显示另一个AbilitySlice,可以使用Intent对象传递所需的信息。brpublic final void present(AbilitySlice targetSlice, Intent intent)
我们先在layout目录下的ability_main.xml,添加一个按钮:
<?xml version="1.0" encoding="utf-8"?>br<DirectionalLayoutbr xmlns:ohos=";br ohos:height="match_parent"br ohos:width="match_parent"br ohos:background_element="#33AA0000"br ohos:orientation="vertical">brbrbr <Buttonbr ohos:id="$+id:btn1"br ohos:height="match_content"br ohos:width="match_content"br ohos:text="点击按钮,跳转到第一个页面"br ohos:center_in_parent="true"br ohos:text_size="20fp"br ohos:layout_alignment="horizontal_center"br ohos:background_element="#EEEEEE"br ohos:padding="10vp"br ohos:top_margin="20vp"br />brbr</DirectionalLayout>
然后我们在layout目录下,再创建一个xml文件,表示要跳转的第二个页面,ability_second.xml,
<?xml version="1.0" encoding="utf-8"?>br<DependentLayoutbr xmlns:ohos=";br ohos:height="match_parent"br ohos:width="match_parent"br ohos:padding="10vp"br ohos:background_element="#2200AA00"br ohos:orientation="vertical">brbr <Textbr ohos:height="match_content"br ohos:width="match_parent"br ohos:text="第二个页面"br ohos:text_alignment="center"br ohos:text_size="20fp"brbr />brbr <Buttonbr ohos:id="$+id:btn2"br ohos:height="match_content"br ohos:width="match_content"br ohos:text="点击按钮,跳转到第一个页面"br ohos:center_in_parent="true"br ohos:text_size="20fp"br ohos:background_element="#EEEEEE"br ohos:padding="10vp"br />brbr</DependentLayout>
我们在slice包下新建一个AbilitySlice文件:SecondAbilitySlice.java,用于加载ability_second.xml布局。
public class SecondAbilitySlice extends AbilitySlice{br @Overridebr protected void onStart(Intent intent) {br super.onStart(intent);br super.setUIContent(ResourceTable.Layout_ability_second);brbr }br}
然后在MyAbilitySlice中,获取Button组件,并添加点击事件。
package com.example.hanruabilityslicejump.slice;brbrimport com.example.hanruabilityslicejump.ResourceTable;brimport ohos.aafwk.ability.AbilitySlice;brimport ohos.aafwk.content.Intent;brimport ohos.agp.components.Button;brbrpublic class MainAbilitySlice extends AbilitySlice {br @Overridebr public void onStart(Intent intent) {br super.onStart(intent);br super.setUIContent(ResourceTable.Layout_ability_main);brbr // 1.present-----------------------------------br // 获取按钮br Button btn1 = (Button) findComponentById(ResourceTable.Id_btn1);br // 为按钮添加点击事件br /**br * present(AbilitySlice targetSlice, Intent intent)br * 设置要启动的组件,确定其实位置和目标位置,就是说从哪跳到哪。br */br btn1.setClickedListener(component -> present(new SecondAbilitySlice(),new Intent()));brbrbrbr }brbr}br
在SecondAbilitySlice.java的onStart()方法中,也添加点击事件:
Button btn2 = (Button) findComponentById(ResourceTable.Id_btn2);br btn2.setClickedListener(component -> present(new MainAbilitySlice(),new Intent()));br
这样我们就可以点击第一个页面的按钮跳转到第二个页面,点击第二个页面的按钮跳转到第一个页面。
看一下效果:
1.2 presentForResult
如果开发者希望在用户从导航目标AbilitySlice返回时,能够获得其返回结果,则应当使用presentForResult()实现导航。用户从导航目标AbilitySlice返回时,系统将回调onResult()来接收和处理返回结果,开发者需要重写该方法。返回结果由导航目标AbilitySlice在其生命周期内通过setResult()进行设置。
@Overridebrprotected void onStart(Intent intent) {brbr ...br Button button = ...;br button.setClickedListener(listener -> presentForResult(new TargetSlice(), new Intent(), 0));br ...brbr}brbr@Overridebrprotected void onResult(int requestCode, Intent resultIntent) {br if (requestCode == 0) {br // Process resultIntent here.br }br}
这里的presentForResult()方法:
// 显示另一个AbilitySlice,并通过调用setResult(ohos.aafwk.content.Intent)返回目标AbilitySlice设置的结果。/** * targetSlice,明确目标AbilitySlice,不能为null。 * intent,跳转时携带的信息,不能为null。 * requestCode,自定义请求代码,不能为负数。 */public final void presentForResult(AbilitySlice targetSlice, Intent intent, int requestCode)
跳转并回传,操作步骤:
1.在A页面,使用presentForResult(AbilitySlice targetSlice, Intent intent, int requestCode),跳转到第二个页面。2.在B页面,使用setResult(Intent resultData) ,当B页面结束的时候,会回到A页面。3.在A页面,会执行onResult(int requestCode, Intent resultIntent)。验证requestCode,是否是发送时的请求码操作resultIntent获取数据
我们在ability_main.xml中再添加一个按钮:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33AA0000" ohos:orientation="vertical"> ... <Button ohos:id="$+id:btn2" ohos:height="match_content" ohos:width="match_content" ohos:text="跳转并回传数据" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
然后在layout目录下新建一个xml文件,present_for_result.xml:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:padding="20vp" ohos:orientation="vertical"> <Text ohos:id="$+id:textmsg" ohos:height="200vp" ohos:width="match_parent" ohos:background_element="#3300ff00" ohos:text_size="25fp" ohos:text_alignment="center" /> <Button ohos:id="$+id:btnforresult" ohos:height="match_content" ohos:width="match_content" ohos:text="将结果返回给上一个页面" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
然后在MainAbilitySlice.java中,获取该按钮跳转到第二个页面,当第二个页面销毁的时候,回传数据:
// presentForResult----------------------------------- Button btn2 = (Button) findComponentById(ResourceTable.Id_btn2); /** * 跳转并回传,操作步骤: * 1.在A页面,使用presentForResult(AbilitySlice targetSlice, Intent intent, int requestCode),跳转到第二个页面 * 2.在B页面,使用setResult(Intent resultData) ,当B页面结束的时候,会回到A页面。 * 3.在A页面,会执行onResult(int requestCode, Intent resultIntent)。 * 验证requestCode,是否是发送时的请求码 * 操作resultIntent获取数据 */ btn2.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { // 1. 要跳转到第二个页面,并传值 Intent intent2 = new Intent(); intent2.setParam("msg","你是小白兔嚒?"); // 跳转到详情页面,并返回数据 presentForResult(new PresentForResultAbilitySlice(),intent2,REQUESTCODE); } } });
然后在src下新建一个AbilitySlice文件:PresentForResultAbilitySlice.java,
package com.example.hanruabilityslicejump.slice;import com.example.hanruabilityslicejump.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;import ohos.agp.components.Button;import ohos.agp.components.Component;import ohos.agp.components.Text;public class PresentForResultAbilitySlice extends AbilitySlice{ @Override protected void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_present_for_result); // 接收intent中数据 String msg = intent.getStringParam("msg"); // 将数据设置到Text上。 Text textMsg = (Text) findComponentById(ResourceTable.Id_textmsg); textMsg.setText(msg); // 第二个页面上,点击按钮返回第一个页面,并回传数据 Button btnForResult = (Button) findComponentById(ResourceTable.Id_btnforresult); btnForResult.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { // 点击按钮,回传数据,并销毁当前的AbilitySlice,就会退回到A页面。 //回传数据 Intent intent1 = new Intent(); intent1.setParam("backMsg","我是长颈鹿"); setResult(intent1); // 返回A页面, System.out.println("B页面。。回传数据。。。"); terminate();// 销毁当前的AbilitySlice// present(new MainAbilitySlice(),intent1); } }); }}
这里我们的思路是,先获取上一个页面传来的数据,点击按钮,回传数据到第一个页面。
然后我们在第一个页面中重写onResult()方法,处理回传来的数据。
// 通过presentForResult()跳转到另一个页面,并通过调用 setResult(ohos.aafwk.content.Intent) 返回目标AbilitySlice设置的结果。 @Override protected void onResult(int requestCode, Intent resultIntent) { System.out.println("requestCode-->"+requestCode); System.out.println("-->"+resultIntent); switch (requestCode) { case REQUESTCODE: if(resultIntent != null){ String backMsg = resultIntent.getStringParam("backMsg"); System.out.println("backMsg-->"+backMsg); new ToastDialog(getContext()).setText(backMsg+"").show(); } break; default: } }
我们运行程序:
我们也可以观察一下打印的信息:
二、不同Page的AbilitySlice之间的跳转
AbilitySlice作为Page的内部单元,以Action的形式对外暴露,因此可以通过配置Intent的Action导航到目标AbilitySlice。不同Page之间的导航,不能使用present()或者presentForResult()。可以使用startAbility()或startAbilityForResult()方法,获得返回结果的回调为onAbilityResult()。在Ability中调用setResult()可以设置返回结果。
2.1 startAbility
方式一:根据Ability的全称启动应用。
通过withAbilityName()和withBundleName()来指定要跳转的Ability。
首先我们先新建一个Ability,OtherAbility.java
package com.example.hanruabilityslicejump;import com.example.hanruabilityslicejump.slice.ThirdAbilitySlice;import ohos.aafwk.ability.Ability;import ohos.aafwk.content.Intent;public class OtherAbility extends Ability{ @Override protected void onStart(Intent intent) { super.onStart(intent); // 设置另一个Ability,加载的AbilitySlice。 super.setMainRoute(ThirdAbilitySlice.class.getName()); }}
设置要加载的主路由是ThirdAbilitySlice,那么我们得在slice目录下新建一个AbilitySlice,ThirdAbilitySlice.java:
package com.example.hanruabilityslicejump.slice;import com.example.hanruabilityslicejump.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;public class ThirdAbilitySlice extends AbilitySlice{ @Override protected void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_otherability_third); }}
这里加载的xml布局文件是otherability_third,所以我们在layout目录下新建一个布局文件:otherability_third.xml:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33aa00aa" ohos:orientation="vertical"> <Text ohos:height="match_parent" ohos:width="match_parent" ohos:text="我是OtherAbility中的AbilitySlice" ohos:text_size="24fp" ohos:text_alignment="center" /></DirectionalLayout>
最后不要忘记在config.json文件中注册这个OtherAbility:这里我们指定一个action。
{ "skills": [ { "actions": [ "action.other.show" ] } ], "orientation": "unspecified", "name": "com.example.hanruabilityslicejump.OtherAbility", "type": "page", "launchType": "standard" }
如果所示:
然后我们在ability_main.xml中,添加第三个按钮:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33AA0000" ohos:orientation="vertical"> ... <Button ohos:id="$+id:btn3" ohos:height="match_content" ohos:width="match_content" ohos:text="不同page之间AbilitySlice的跳转" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
在MainAbility.java中,添加第三个按钮的点击事件:
// 3.startAbility----------------------------------- Button btn3 = (Button) findComponentById(ResourceTable.Id_btn3); btn3.setClickedListener(component -> { System.out.println("----btn3点击------"); //不同Page之间的导航,不能使用present()或者presentForResult() Intent intent3 = new Intent(); // 通过withAbilityName()指定要跳转到Ability,但是需要同时使用withBundleName()。 Operation operation = new Intent.OperationBuilder() .withAbilityName(OtherAbility.class) .withBundleName("com.example.hanruabilityslicejump") .build(); intent3.setOperation(operation); startAbility(intent3); });
运行,点击第三个按钮:
这里我们要注意,通过withAbilityName()指定要跳转到Ability,但是需要同时使用withBundleName()。
方式二:也可以通过Action来指定
我们在ability_main.xml中,添加第4个个按钮:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33AA0000" ohos:orientation="vertical"> ... <Button ohos:id="$+id:btn4" ohos:height="match_content" ohos:width="match_content" ohos:text="不同page之间AbilitySlice的跳转2" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
然后在MainAbility.java中添加第4个按钮的点击事件,
// 4.startAbility----------------------------------- Button btn4 = (Button)findComponentById(ResourceTable.Id_btn4); btn4.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { System.out.println("点击btn4。。。"); Intent intent4 = new Intent(); // 通过指定Action。 //setAction()方法过时了。 //in.setAction("action.other.show");//指定另一个Page中的AbilitySlice的action值 Operation operation = new Intent.OperationBuilder() .withAction("action.other.show") .build(); intent4.setOperation(operation); startAbility(intent4); } });
运行:
如果一个想跳转到不同Page里的另一个AbilitySlice,可以如下操作。
首先先创建一个xml布局文件,otherability_four.xml:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33aaaa00" ohos:orientation="vertical"> <Text ohos:height="match_parent" ohos:width="match_parent" ohos:text="我是OtherAbility中的另一个AbilitySlice" ohos:text_size="24fp" ohos:multiple_lines="true" ohos:text_alignment="center" /></DirectionalLayout>
然后新建一个AbilitySlice:FourAbilitySlice.java,来指定要加载这个xml文件:
package com.example.hanruabilityslicejump.slice;import com.example.hanruabilityslicejump.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;public class FourAbilitySlice extends AbilitySlice { @Override protected void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_otherability_four); }}
在Ability中配置路由以便支持以此action导航到对应的AbilitySlice。
package com.example.hanruabilityslicejump;import com.example.hanruabilityslicejump.slice.FourAbilitySlice;import com.example.hanruabilityslicejump.slice.StartAbilityForResultAbilitySlice;import com.example.hanruabilityslicejump.slice.ThirdAbilitySlice;import ohos.aafwk.ability.Ability;import ohos.aafwk.content.Intent;public class OtherAbility extends Ability{ @Override protected void onStart(Intent intent) { super.onStart(intent); // set the main route,默认加载的AbilitySlice。 super.setMainRoute(ThirdAbilitySlice.class.getName()); // set the action route super.addActionRoute("action.other.four", FourAbilitySlice.class.getName()); }}
这里的action:"action.other.four",也需要在config.json中进行配置:
"skills": [ { "actions": [ "action.other.show", "action.other.four" ] } ],
然后在ability_main.xml中再添加一个按钮:第5个
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33AA0000" ohos:orientation="vertical"> ... <Button ohos:id="$+id:btn5" ohos:height="match_content" ohos:width="match_content" ohos:text="不同page之间另一个AbilitySlice" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
如果我们想通过点击第5个按钮,来打开OtherAbility中的FourAbilitySlice:
// 5.startAbility----------------------------------- Button btn5 = (Button)findComponentById(ResourceTable.Id_btn5); btn5.setClickedListener(component->{ System.out.println("点击btn5。。。"); Intent intent5 = new Intent(); // 通过指定Action。 Operation operation = new Intent.OperationBuilder() .withAction("action.other.four") .build(); intent5.setOperation(operation); startAbility(intent5); });
运行效果:
这里的Action,还可以使用一些系统的,比如打开拨号等。我们可以在Intent章节详细介绍。
2.2 startAbilityForResult
先说一下思路:
1、首先要在第一个Ability的AbilitySlice中,构造Intent以及包含Action的Operation对象,并调用startAbilityForResult()方法发起请求。
2、根据startAbilityForResult()中的参数,跳转到指定的另一个Ability的AbilitySlice中。
3、在另一个Ability中处理请求,并调用setResult()方法暂存返回结果。
4、回到第一个Ability,重写onAbilityResult(),进行处理回传的结果。
我们通过代码来实现一下,首先在layout目录下新建一个xml文件:start_ability_for_result.xml,用作要跳转到的布局页面:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:padding="20vp" ohos:orientation="vertical"> <Text ohos:height="match_content" ohos:width="match_parent" ohos:text_size="25fp" ohos:text="不同的PageAbility" ohos:text_alignment="center" ohos:bottom_margin="30vp" /> <Text ohos:id="$+id:textmsg" ohos:height="200vp" ohos:width="match_parent" ohos:background_element="#3300ffff" ohos:text_size="25fp" ohos:text_alignment="center" /> <Button ohos:id="$+id:btnforresult2" ohos:height="match_content" ohos:width="match_content" ohos:text="将结果返回给上一个页面" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
然后在slice下新建一个AbilitySlice,StartAbilityForResultAbilitySlice.java,用于要跳转到的界面,首先先加载一个布局,就是刚刚上面创建的xml。
public class StartAbilityForResultAbilitySlice extends AbilitySlice { @Override protected void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_start_ability_for_result); }
我们需要在OtherAbility中设置action:
public class OtherAbility extends Ability{ @Override protected void onStart(Intent intent) { super.onStart(intent); // set the main route,默认加载的AbilitySlice。 super.setMainRoute(ThirdAbilitySlice.class.getName()); // set the action route super.addActionRoute("action.other.four", FourAbilitySlice.class.getName()); super.addActionRoute("action.other.result", StartAbilityForResultAbilitySlice.class.getName()); }
并且在config.json中注册action:
"skills": [ { "actions": [ "action.other.show", "action.other.four", "action.other.result" ] } ]
然后在ability_main.xml中,再添加一个按钮:
<?xml version="1.0" encoding="utf-8"?><DirectionalLayout xmlns:ohos="; ohos:height="match_parent" ohos:width="match_parent" ohos:background_element="#33AA0000" ohos:orientation="vertical"> ... <Button ohos:id="$+id:btn6" ohos:height="match_content" ohos:width="match_content" ohos:text="不同page之间AbilitySlice的跳转并回传数据" ohos:center_in_parent="true" ohos:text_size="20fp" ohos:multiple_lines="true" ohos:layout_alignment="horizontal_center" ohos:background_element="#EEEEEE" ohos:padding="10vp" ohos:top_margin="20vp" /></DirectionalLayout>
在MainAbility中添加按钮6的点击事件,指定好action:
// 6.startAbilityForResult----------------------------------- Button btn6 = (Button)findComponentById(ResourceTable.Id_btn6); btn6.setClickedListener(component-> { System.out.println("点击btn6。。。"); Intent intent6 = new Intent(); intent6.setParam("message","面朝大海,春暖花开"); Operation operation = new Intent.OperationBuilder() .withAction("action.other.result") // 指定Action .build(); intent6.setOperation(operation); startAbilityForResult(intent6,REQUESTCODEFORRESULT); });
我们需要在StartAbilityForResultAbilitySlice.java中,进行处理发送来的数据:
package com.example.hanruabilityslicejump.slice;import com.example.hanruabilityslicejump.MainAbility;import com.example.hanruabilityslicejump.ResourceTable;import ohos.aafwk.ability.AbilitySlice;import ohos.aafwk.content.Intent;import ohos.aafwk.content.Operation;import ohos.agp.components.Button;import ohos.agp.components.Component;import ohos.agp.components.Text;public class StartAbilityForResultAbilitySlice extends AbilitySlice { @Override protected void onStart(Intent intent) { super.onStart(intent); super.setUIContent(ResourceTable.Layout_start_ability_for_result); // 接收intent中数据 String msg = intent.getStringParam("message"); // 将数据设置到Text上。 Text textMsg = (Text) findComponentById(ResourceTable.Id_textmsg); textMsg.setText(msg); // 第二个页面上,点击按钮返回第一个页面,并回传数据 Button btnForResult2 = (Button) findComponentById(ResourceTable.Id_btnforresult2); btnForResult2.setClickedListener(new Component.ClickedListener() { @Override public void onClick(Component component) { // 毁当前的AbilitySlice,就会退回到A页面。 terminate();// 销毁当前的AbilitySlice } }); }}
这里我们将上一个页面传来的数据,显示到Text上,按钮的点击事件中,我们只是调用terminate(),销毁当前的AbilitySlice,那么就会退回到上一个页面。
这里要注意,给MainAbilitySlice回传的数据,要写到OtherAbility的onActive()中:
package com.example.hanruabilityslicejump;import com.example.hanruabilityslicejump.slice.FourAbilitySlice;import com.example.hanruabilityslicejump.slice.StartAbilityForResultAbilitySlice;import com.example.hanruabilityslicejump.slice.ThirdAbilitySlice;import ohos.aafwk.ability.Ability;import ohos.aafwk.content.Intent;public class OtherAbility extends Ability{ @Override protected void onStart(Intent intent) { super.onStart(intent); // set the main route,默认加载的AbilitySlice。 super.setMainRoute(ThirdAbilitySlice.class.getName()); // set the action route super.addActionRoute("action.other.four", FourAbilitySlice.class.getName()); super.addActionRoute("action.other.result", StartAbilityForResultAbilitySlice.class.getName()); } @Override protected void onActive() { super.onActive(); System.out.println("======OtherAbility=======onActive()"); Intent intent1 = new Intent(); intent1.setParam("backMessage","星辰大海"); setResult(0,intent1); //0为当前Ability销毁后返回的resultCode。 System.out.println("B页面。。回传数据。。。"); }}
当点击按钮跳转过来后,我们看一下打印的结果:
然后我们在onAbilityResult()处理结果:
// 处理startAbilityForResult()回传的结果 @Override protected void onAbilityResult(int requestCode, int resultCode, Intent resultData) { System.out.println("requestCode:" + requestCode + ", resultCode:-->" + resultCode); if (requestCode == REQUESTCODEFORRESULT && resultCode == 0) { if (resultData != null) { String backMessage = resultData.getStringParam("backMessage"); System.out.println("backMessage-->" + backMessage); new ToastDialog(getContext()).setText(backMessage + "").show(); }else{ new ToastDialog(getContext()).setText("没有获取到回传到数据。。").show(); } } }
好了,我们来完整运行一下:
在第二个页面,我们点击按钮,或者直接点击返回键,都可以回到第一个页面,获取到回传到数据。
标签: #java点击按钮跳转界面 #java如何实现跳转到指定页面