10.20 groovy寫安卓,如何保存fragment的狀態

电玩女神 2022-08-09 11:50 130阅读 0赞

# groovy寫安卓代碼注意事項： #

下載sdk：[http://groovy-lang.org/download.html][http_groovy-lang.org_download.html]  
需要配置:

apply plugin: 'com.android.application'
    
    buildscript { repositories { jcenter() }
        dependencies { classpath 'com.android.tools.build:gradle:1.3.0' classpath 'org.codehaus.groovy:gradle-groovy-android-plugin:0.3.6' }
    }
    apply plugin: 'groovyx.grooid.groovy-android'
    
    
    dependencies { compile 'org.codehaus.groovy:groovy:2.4.3:grooid' compile('org.codehaus.groovy:groovy-json:2.4.3') { transitive = false }
    }

一個groovy寫的遵循Google Material Design设计原则安卓源代碼  
[https://github.com/zzhoujay/Gank4Android][https_github.com_zzhoujay_Gank4Android]

參考：  
[http://m.blog.csdn.net/blog/zhjali123/45128187][http_m.blog.csdn.net_blog_zhjali123_45128187]

# Gradle: 错误:编码 GBK 的不可映射字符的解決方案: #

在项目下的build.gradle下添加以下代码即可解决

tasks.withType(Compile) \{  
options.encoding = “UTF-8”  
\}  
Gradle2.0+环境下需将Compile改为JavaCompile

tasks.withType(JavaCompile) \{  
options.encoding = “UTF-8”  
\}

# Mac下批量将GBK转换UTF-8编码 #

[http://weijun.me/post/develop/2015-07-29][http_weijun.me_post_develop_2015-07-29]  
原理:  
mac shell  
iconv -f GBK -t UTF8 “path">"\{ipath.java\_gbk\}.java”

# 中文文字感情分享,java開源庫 #

[http://www.oschina.net/p/semanticanalysis][http_www.oschina.net_p_semanticanalysis]  
[http://git.oschina.net/www.feit.com/SemanticAnalysis][http_git.oschina.net_www.feit.com_SemanticAnalysis]  
使用方式：

1.自行编译src 或者直接下载dist中的zg-sa.jar  
2.需要引用的第三方的包位于lib文件夹中

DEMO:

?  
1  
2  
3  
Analysis analysis = new Analysis();  
System.out.println(“1: ” + analysis.parse(“这是一个普通评论”).getCode());  
System.out.println(“2: ” + analysis.parse(“中国加油!”).getDisplay());  
输出：

1: 0  
2: 正面

正面：1  
负面：-1  
中性：0

# android 6.0 ssl3\_get\_server\_key\_exchange:BAD\_DH\_P\_LENGTH #

[http://bbs.csdn.net/topics/391843187][http_bbs.csdn.net_topics_391843187]  
出現這個原因是因為：  
android自家寫的BoringSSL不在支持openssl的漏洞導致logjam attack

# 保存fragment狀態 #

activity裡面這樣寫：

@Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            if (savedInstanceState == null) {
                getSupportFragmentManager().beginTransaction()
                        .add(R.id.contentContainer, MainFragment.newInstance())
                        .commit();
            }
        }

fragment里面这样写：

Bundle savedState;
    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
       super.onActivityCreated(savedInstanceState);
       // Restore State Here
       if (!restoreStateFromArguments()) {
          // First Time running, Initialize something here
       }
    }
    @Override
    public void onSaveInstanceState(Bundle outState) {
       super.onSaveInstanceState(outState);
       // Save State Here
       // 這裡是防止旋轉屏幕是出現的狀態丟失問題
       saveStateToArguments();
    }
    @Override
    public void onDestroyView() {
       super.onDestroyView();
       // Save State Here
       saveStateToArguments();
    }
    private void saveStateToArguments() {
       savedState = saveState();
       if (savedState != null) {
          Bundle b = getArguments();
          b.putBundle(“internalSavedViewState8954201239547”, savedState);
       }
    }
    private boolean restoreStateFromArguments() {
       Bundle b = getArguments();
       savedState = b.getBundle(“internalSavedViewState8954201239547”);
       if (savedState != null) {
          restoreState();
          return true;
       }
       return false;
    }
    /////////////////////////////////
    // 取出状态数据
    /////////////////////////////////
    private void restoreState() {
       if (savedState != null) {
          //比如
          //tv1.setText(savedState.getString(“text”));
       }
    }
    //////////////////////////////
    // 保存状态数据
    //////////////////////////////
    private Bundle saveState() {
       Bundle state = new Bundle();
       // 比如
       //state.putString(“text”, tv1.getText().toString());
       return state;
    }

參考:  
[http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0327/2648.html][http_www.jcodecraeer.com_a_anzhuokaifa_androidkaifa_2015_0327_2648.html]  
[http://inthecheesefactory.com/blog/fragment-state-saving-best-practices/en][http_inthecheesefactory.com_blog_fragment-state-saving-best-practices_en]  
一個有demo的開源地址：  
[https://github.com/nuuneoi/StatedFragment][https_github.com_nuuneoi_StatedFragment]

[http_groovy-lang.org_download.html]: http://groovy-lang.org/download.html
[https_github.com_zzhoujay_Gank4Android]: https://github.com/zzhoujay/Gank4Android
[http_m.blog.csdn.net_blog_zhjali123_45128187]: http://m.blog.csdn.net/blog/zhjali123/45128187
[http_weijun.me_post_develop_2015-07-29]: http://weijun.me/post/develop/2015-07-29
[http_www.oschina.net_p_semanticanalysis]: http://www.oschina.net/p/semanticanalysis
[http_git.oschina.net_www.feit.com_SemanticAnalysis]: http://git.oschina.net/www.feit.com/SemanticAnalysis
[http_bbs.csdn.net_topics_391843187]: http://bbs.csdn.net/topics/391843187
[http_www.jcodecraeer.com_a_anzhuokaifa_androidkaifa_2015_0327_2648.html]: http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2015/0327/2648.html
[http_inthecheesefactory.com_blog_fragment-state-saving-best-practices_en]: http://inthecheesefactory.com/blog/fragment-state-saving-best-practices/en
[https_github.com_nuuneoi_StatedFragment]: https://github.com/nuuneoi/StatedFragment