Java 如何在另一个活动中使用editText作为url并单击按钮打开webview
MainActivity.javaJava 如何在另一个活动中使用editText作为url并单击按钮打开webview,java,android,android-layout,webview,Java,Android,Android Layout,Webview,MainActivity.java public class MainActivity extends Activity { WebView web1; EditText ed1; Button bt1; String Address; ProgressBar pbar; @Override protected void onCreate(Bundle savedInstanceState) { final Contex
public class MainActivity extends Activity {
WebView web1;
EditText ed1;
Button bt1;
String Address;
ProgressBar pbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
final Context context = this;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
web1 = (WebView) findViewById(R.id.webView1);
ed1 = (EditText) findViewById(R.id.editText1);
bt1 = (Button) findViewById(R.id.button1);
pbar.setVisibility(View.GONE);
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(context, WebViewActivity.class);
startActivity(intent);
Address = "http://" + ed1.getText().toString();
WebSettings webSetting = web1.getSettings();
webSetting.setBuiltInZoomControls(true);
webSetting.setJavaScriptEnabled(true);
setContentView(R.layout.activity_main);
public class WebViewActivity extends Activity {
WebView web1;
String Address;
String add;
ProgressBar pbar;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new);
web1 = (WebView)findViewById(R.id.webView1);
pbar = (ProgressBar)findViewById(R.id.progressBar1);
pbar.setVisibility(View.GONE);
web1.setWebViewClient(new WebViewActivity.WebViewClient());
}
public class WebViewClient extends android.webkit.WebViewClient
{
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
pbar.setVisibility(View.VISIBLE);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
pbar.setVisibility(View.GONE);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK) && web1.canGoBack()) {
web1.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
//下面给出的错误说明新WebViewClient无法解决
web1.setWebViewClient(new WebViewClient());
web1.loadUrl(Address);
}
});
}
}
WebViewActivity.java
public class MainActivity extends Activity {
WebView web1;
EditText ed1;
Button bt1;
String Address;
ProgressBar pbar;
@Override
protected void onCreate(Bundle savedInstanceState) {
final Context context = this;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
web1 = (WebView) findViewById(R.id.webView1);
ed1 = (EditText) findViewById(R.id.editText1);
bt1 = (Button) findViewById(R.id.button1);
pbar.setVisibility(View.GONE);
bt1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent intent = new Intent(context, WebViewActivity.class);
startActivity(intent);
Address = "http://" + ed1.getText().toString();
WebSettings webSetting = web1.getSettings();
webSetting.setBuiltInZoomControls(true);
webSetting.setJavaScriptEnabled(true);
setContentView(R.layout.activity_main);
public class WebViewActivity extends Activity {
WebView web1;
String Address;
String add;
ProgressBar pbar;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_new);
web1 = (WebView)findViewById(R.id.webView1);
pbar = (ProgressBar)findViewById(R.id.progressBar1);
pbar.setVisibility(View.GONE);
web1.setWebViewClient(new WebViewActivity.WebViewClient());
}
public class WebViewClient extends android.webkit.WebViewClient
{
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
pbar.setVisibility(View.VISIBLE);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
pbar.setVisibility(View.GONE);
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if ((keyCode == KeyEvent.KEYCODE_BACK) && web1.canGoBack()) {
web1.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
使用意图将url作为字符串传递给webview活动:
Intent intent = new Intent(context, WebViewActivity.class);
intent.putExtra("URL",url)
startActivity(intent);
并通过以下方式在WebViewActivity onCreate中访问它:
Intent in = getIntent();
String url = in.getStringExtra("URL");
现在将此url传入
weview.loadurl(url);
main活动
public class MainActivity extends AppCompatActivity {
Button b1;
EditText ed1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1 = (Button) findViewById(R.id.button);
ed1 = (EditText) findViewById(R.id.editText);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url = ed1.getText().toString();
Intent intent = new Intent(getApplicationContext(), WebViewActivity.class);
intent.putExtra("URL", url);
startActivityForResult(intent, 1);
}
});
}
}
public class WebViewActivity extends AppCompatActivity {
private WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
String url = getIntent().getStringExtra("URL");
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new MyBrowser());
webView.getSettings().setLoadsImagesAutomatically(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.loadUrl(url);
}
private class MyBrowser extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GO"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent">
</WebView>
</LinearLayout>
webview.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GO"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent">
</WebView>
</LinearLayout>
AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.mywebviewapplication">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".WebViewActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
</application>
</manifest>
使用意图将url作为字符串传递给webview活动:
Intent intent = new Intent(context, WebViewActivity.class);
intent.putExtra("URL",url)
startActivity(intent);
并通过以下方式在WebViewActivity onCreate中访问它:
Intent in = getIntent();
String url = in.getStringExtra("URL");
现在将此url传入
weview.loadurl(url);
main活动
public class MainActivity extends AppCompatActivity {
Button b1;
EditText ed1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1 = (Button) findViewById(R.id.button);
ed1 = (EditText) findViewById(R.id.editText);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String url = ed1.getText().toString();
Intent intent = new Intent(getApplicationContext(), WebViewActivity.class);
intent.putExtra("URL", url);
startActivityForResult(intent, 1);
}
});
}
}
public class WebViewActivity extends AppCompatActivity {
private WebView webView;
@Override
protected void onCreate(Bundle savedInstanceState) {
String url = getIntent().getStringExtra("URL");
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new MyBrowser());
webView.getSettings().setLoadsImagesAutomatically(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
webView.loadUrl(url);
}
private class MyBrowser extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GO"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent">
</WebView>
</LinearLayout>
webview.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">
<EditText
android:id="@+id/editText"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="GO"/>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<WebView
android:id="@+id/webView"
android:layout_width="match_parent"
android:layout_height="match_parent">
</WebView>
</LinearLayout>
AndroidManifest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.android.mywebviewapplication">
<uses-permission android:name="android.permission.INTERNET" />
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".WebViewActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
</application>
</manifest>
看看,你可以在活动之间传递URL。你确定它无法解析吗?您有一个导入android.webkit.WebViewClient的import,对吗?当android.webkit.WebViewClient
的名称已经存在冲突时,您可能不应该将您的类命名为WebViewClient
,当我运行itOkay时它会崩溃,所以显示日志。请看,您可以在活动之间传递URL。您确定它无法解析吗?您有一个导入android.webkit.WebViewClient的import,对吗?当android.webkit.WebViewClient
的名称已经存在冲突时,您可能不应该将您的类命名为WebViewClient
,当我运行itOkay时它会崩溃,所以显示日志。下面是一个逐步实现@MarkAcquaisie确保添加internet权限并在清单文件中添加活动。您能否帮助我在tutorialspoint修改示例,以便将其加载到其他活动中。这就是我想要的。我是安卓系统的新生。@Aayush Thakur谢谢@Aayush Thaku查看更新。如果这对你有效的话,请投票并接受我的回答。这里是一个逐步实施的步骤@MarkAcquaisie确保添加internet权限并在清单文件中添加活动。您能否帮助我在tutorialspoint修改示例,以便将其加载到其他活动中。这就是我想要的。我是安卓系统的新生。@Aayush Thakur谢谢@Aayush Thaku查看更新。如果这对你有效,请投票并接受我的回答。