在android开发中,fragment与activity传值


在Android开发中,Fragment与Activity之间的传值主要有以下几种方式: 1. 使用Intent传值:Intent是一种用于传递数据的组件,可以用来启动Activity、传递数据等。可以通过putExtra方法向Intent添加数据,然后在另一个Activity或Fragment中通过getExtra方法获取数据。 ```java Intent intent = new Intent(getActivity(), AnotherActivity.class); intent.putExtra("key", "value"); startActivity(intent); ``` 2. 使用Bundle传值:Bundle也是一种用于传递数据的容器,可以用来传递多个数据。可以通过putString、putInt、putDouble等方法向Bundle添加数据,然后在另一个Activity或Fragment中通过getString、getInt、getDouble等方法获取数据。 ```java Bundle bundle = new Bundle(); bundle.putString("key", "value"); startActivity(new Intent(getActivity(), AnotherActivity.class), bundle); ``` 3. 使用SharedPreferences传值:SharedPreferences是一种用于保存键值对数据的工具,可以用来保存和获取用户的偏好设置。可以通过edit、putString、apply等方法保存数据,然后通过getString、getStringSet等方法获取数据。 ```java SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity()); SharedPreferences.Editor editor = sharedPreferences.edit(); editor.putString("key", "value"); editor.apply(); ``` 4. 使用BroadcastReceiver传值:BroadcastReceiver是一种可以接收广播的组件,可以用来在不同的Activity或Fragment之间传递数据。可以通过sendBroadcast方法发送广播,然后在另一个Activity或Fragment中通过BroadcastReceiver接收到广播。 ```java Intent intent = new Intent("com.example.KEY"); intent.putExtra("key", "value"); sendBroadcast(intent); ``` 5. 使用SharedElement传值:SharedElement是一种可以共享的元素,可以用来在Activity之间传递视图。可以通过addSharedElement方法添加元素,然后在另一个Activity中通过enterTransition、exitTransition等属性设置元素的动画效果。 ```java ActivityOptions options = ActivityOptions.makeSceneTransitionAnimation(this, view, "key"); startActivity(intent, options.toBundle()); ``` 以上就是在Android开发中Fragment与Activity之间的几种传值方式,开发者可以根据自己的需求选择合适的方式。 [2023-11-07 22:35:52 | AI写代码神器 | 440点数解答]
- package com.example.weather; import android.content.context; import android.media.mediaplayer; import android.net.uri; import android.os.bundle; import android.util.log; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.webkit.websettings; import android.webkit.webview; import android.webkit.webviewclient; import android.widget.videoview; import androidx.fragment.app.fragment; public class realtimemonitoringfragment extends fragment {(30点数解答 | 2024-10-12 10:31:18)227
- package com.example.weather; import android.content.context; import android.media.mediaplayer; import android.net.uri; import android.os.bundle; import android.util.log; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.webkit.websettings; import android.webkit.webview; import android.webkit.webviewclient; import android.widget.videoview; import androidx.fragment.app.fragment; public class realtimemonitoringfragment extends fragment {(531点数解答 | 2024-10-12 10:32:25)206
- 如何用aide编写的xposed软件拦截一个smail类里面的方法名,请参考如下代码进行修改达到效果 import android.content.*; import android.graphics.*; import android.os.*; import android.widget.*; import de.robv.android.xposed.*; import de.robv.android.xposed.callbacks.*; import java.util.*; import android.app.*; /* 注意:该类不要自己写构造方法,否者可能会hook不成功 * 开发xposed模块完成以后,关闭bebug以提升性能 * debug模式只需要第一次重启,以后修改hook代码就不用重启了 */ public class xposed implements ixposedhookloadpackage { public static activity 上下文; @override public void handleloadpackage(x(649点数解答 | 2024-10-12 00:15:48)216
- .method public setupplayer(lcn/subat/music/model/spplayconfig;ljava/lang/string;i)v .registers 6 .line 299 iget-object v0, p0, lcn/subat/music/fragment/player/spmovieplayerfragment;->covermask:lcn/subat/music/base/spconstraintlayout; const/16 v1, 0x8 invoke-virtual {v0, v1}, lcn/subat/music/base/spconstraintlayout;->setvisibility(i)v .line 300 iget-object v0, p0, lcn/subat/music/fragment/player/spmovieplayerfragment;->sharetip:lcn/subat/music/base/sptextview;(29点数解答 | 2024-11-05 01:36:35)208
- .method public 按钮1$被弹起(ii)v .locals 4 .param p1, "\u6a2a\u5750\u6807" # i .param p2, "\u7eb5\u5750\u6807" # i .prologue .line 20 new-instance v0, ljava/lang/stringbuilder; invoke-direct {v0}, ljava/lang/stringbuilder;-><init>()v iget-object v1, p0, lcom/chuchenqi/窗口29;->手机1:lcom/e4a/runtime/components/impl/android/n9/手机; invoke-interface {v1}, lcom/e4a/runtime/components/impl/android/n9/手机;->取imei码()ljava/lang/string; move-result-object v1(208点数解答 | 2024-09-12 16:36:31)265
- 在android开发中,activity 切换(308点数解答 | 2023-11-07 22:46:17)268
- 用aide软件写出xposed模块,xposed模块必须指定拦截或删除一个smail代码调用,smail代码调用如下: invoke-static {p0}, lepic/apple/myapp/white;->epic(landroid/app/activity;)v 给出的xposed模块代码必须拦截此指定smail调用,代码必须完美无漏洞,不导致报错(1220点数解答 | 2024-11-01 21:38:25)146
- 用aide软件写出xposed模块,xposed模块必须指定拦截或删除一个smail代码调用,smail代码调用如下: invoke-static {p0}, lepic/apple/myapp/white;->epic(landroid/app/activity;)v 给出的xposed模块代码必须拦截此指定smail代码调用,代码必须完美无漏洞,不导致报错,代码需判断smail代码类名和方法名,进行指定拦截调用(1832点数解答 | 2024-11-01 21:46:03)169
- 在android开发中,fragment 生命周期(384点数解答 | 2023-11-07 22:36:00)215
- 分析一下这段代码: // __multiversion__ // this signals the loading code to prepend either #version 100 or #version 300 es as apropriate. // to use centroid sampling we need to have version 300 es shaders, which requires changing: // attribute to in // varying to out when in vertex shaders or in when in fragment shaders // defining an out vec4 fragcolor and replacing uses of gl_fragcolor with fragcolor // texture2d to texture #if __version__ >= 300 #define attribute in #define varying out #ifdef msaa_fr(260点数解答 | 2024-10-19 19:42:17)219
- 分析一下这段 opengl vertex的代码: // __multiversion__ // this signals the loading code to prepend either #version 100 or #version 300 es as apropriate. // to use centroid sampling we need to have version 300 es shaders, which requires changing: // attribute to in // varying to out when in vertex shaders or in when in fragment shaders // defining an out vec4 fragcolor and replacing uses of gl_fragcolor with fragcolor // texture2d to texture #if __version__ >= 300 #define attribute in #define varying out(191点数解答 | 2024-10-19 19:43:44)203
- 分析一下这段代码(vertex着色器): // __multiversion__ // this signals the loading code to prepend either #version 100 or #version 300 es as apropriate. // to use centroid sampling we need to have version 300 es shaders, which requires changing: // attribute to in // varying to out when in vertex shaders or in when in fragment shaders // defining an out vec4 fragcolor and replacing uses of gl_fragcolor with fragcolor // texture2d to texture #if __version__ >= 300 #define attribute in #define varying out #if(223点数解答 | 2024-10-19 19:50:37)274