webview的一个通用类



public class AndroidJsBridge {

@android.webkit.JavascriptInterface

public void getPhoto() {

}

}

public class WebActivity extends BaseActivity {

private static final String TAG = WebActivity. class.getSimpleName() ;

private static final String EXTEND_JS_OBJECT = "android" ;

protected WebView mWebView ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState) ;

}

protected void initWeb(WebView webView) {

mWebView = webView ;

WebSettings webSettings = webView.getSettings() ;

webSettings.setUseWideViewPort( true) ;

webSettings.setLoadWithOverviewMode( true) ;

webSettings.setJavaScriptEnabled( true) ;

webSettings.setCacheMode(WebSettings. LOAD_DEFAULT) ; //设置 缓存模式

webSettings.setDomStorageEnabled( true) ;

webSettings.setDatabaseEnabled( true) ;

webSettings.setAppCacheEnabled( true) ;

webView.setWebViewClient( new WebViewClient() {

@Override

public boolean shouldOverrideUrlLoading(WebView view , String url) {

view.loadUrl(url) ;

return true;

}

@Override

public void onPageStarted(WebView view , String url , Bitmap favicon) {

}

@Override

public void onPageFinished(WebView view , String url) {

}

}) ;

webView.setWebChromeClient( new WebChromeClient() {

@Override

public void onProgressChanged(WebView view , int newProgress) {

}

@Override

public void onConsoleMessage(String message , int lineNumber , String sourceID) {

Logger. d( TAG , message + " -- From line " + lineNumber + " of " + sourceID) ;

}

@Override

public boolean onConsoleMessage(ConsoleMessage cm) {

Logger. d( TAG , cm.message() + " -- From line " + cm.lineNumber() + " of "

+ cm.sourceId()) ;

return true;

}

}) ;

}

protected void loadUrl(String url) {

mWebView.loadUrl(url) ;

}

protected void addJsMethod(AndroidJsBridge obj) {

mWebView.addJavascriptInterface(obj , EXTEND_JS_OBJECT) ;

}

@Override

protected void onDestroy() {

mWebView.stopLoading() ;

mWebView.removeAllViews() ;

mWebView.destroy() ;

super.onDestroy() ;

}

}

public class WriteDailyActivity extends WebActivity {

private static final String TAG = WriteDailyActivity. class.getSimpleName() ;

@BindView(R.id. iv_back)

ImageView ivBack ;

@BindView(R.id. tv_materail_title)

TextView tvMaterailTitle ;

@BindView(R.id. tv_appbar_right)

TextView tvAppbarRight ;

private WebView msWebview ;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState) ;

setContentView(R.layout. activity_write_daily) ;

ButterKnife. bind( this) ;

initview() ;

initdata() ;

}

private void initview() {

tvAppbarRight.setVisibility(View. VISIBLE) ;

tvAppbarRight.setText( "完成") ;

tvMaterailTitle.setText( "写日报") ;

msWebview = (WebView) findViewById(R.id. webview) ;

}

private void initdata() {

initWeb( msWebview) ;

addJsMethod( new ExtendJsObject()) ;

String url = " http://192.168.1.105:6001/ " ;

// String url = " http://192.168.31.107:6001/ ";

loadUrl(url) ;

}

@OnClick({R.id. iv_back , R.id. tv_appbar_right})

public void onClick(View view) {

switch (view.getId()) {

case R.id. iv_back:

finish() ;

break;

case R.id. tv_appbar_right:

// 发布日报

getContent() ;

break;

}

}

// js调用这些方法

private class ExtendJsObject extends AndroidJsBridge {

@JavascriptInterface

public int[] jsGetTaskNum() {

//弹出popup 选择任务。 返回任务int【】数组给js

Log. i( TAG , "jsGetTaskNum: ") ;

Handler handler = new Handler(getMainLooper()) ;

handler.post( new Runnable() {

@Override

public void run() {

//弹出popup

}

}) ;

return new int[]{ 1 , 4 , 5} ;

}

@JavascriptInterface

public int jsGetTime() {

//弹出时间选择器

Handler handler = new Handler(getMainLooper()) ;

handler.post( new Runnable() {

@Override

public void run() {

initTimePicker() ;

}

}) ;

Log. i( TAG , "jsGetTime: ") ;

return 2222 ;

}

@JavascriptInterface

public void jsGetIntentUrl( int type) {

Log. i( TAG , "jsGetIntentUrl: " + type) ;

if (type == 1) {

//跳转至成果展示。

}

if (type == 2) {

//跳转到代码连接。

}

}

@JavascriptInterface

public void jsGetContent(String str) {

Log. i( TAG , "content: "+str) ;

}

}

//调用时间选择器

private void initTimePicker() {

TimePickerView timePickerView ;

timePickerView = new TimePickerView( this, TimePickerView.Type. YEAR_MONTH_DAY) ;

Calendar calendar = Calendar. getInstance() ;

timePickerView.setRange(calendar.get(Calendar. YEAR) - 50 , calendar.get(Calendar. YEAR)) ; //要在setTime 之前才有效果哦

timePickerView.setTime( new Date()) ;

timePickerView.setCyclic( false) ;

timePickerView.setCancelable( true) ;

timePickerView.setOnTimeSelectListener( new TimePickerView.OnTimeSelectListener() {

@Override

public void onTimeSelect(Date date) {

Date dates = new Date() ;

int years = dates.getYear() - date.getYear() ;

}

}) ;

timePickerView.show() ;

}

private void getContent(){

Handler handler = new Handler(getMainLooper()) ;

handler.post( new Runnable() {

@Override

public void run() {

msWebview.loadUrl( "javascript:content()") ;

}

}) ;

}