我正在尝试使用我的webview上传文件，并从File Upload in WebView找到代码但我无法将代码与我自己的webview集成（每当我打开应用程序时强制关闭）。
继承人java
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebSettings.PluginState;
import android.webkit.WebSettings.RenderPriority;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class Console extends Activity {
private WebView mWebView;
// UPLOAD MANAGER PART-1//
private ValueCallback<Uri> mUploadMessage;
private final static int FILECHOOSER_RESULTCODE = 1;
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
Uri result = intent == null || resultCode != RESULT_OK ? null
: intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
}
}
// *********************//
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_console);
CookieManager.getInstance().setAcceptCookie(true);// Enable Cookies
mWebView = (WebView) findViewById(R.id.webView1);
mWebView.getSettings().setJavaScriptEnabled(true);// Enable Java Script
mWebView.loadUrl("http://www.google.com/"); // Set Home page
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);// Remove
// ScrollBars
mWebView.getSettings().setDefaultFontSize(12);// Set Font Size
mWebView.getSettings().setLoadsImagesAutomatically(true);// Enable Image
// Loading
mWebView.getSettings().setPluginState(PluginState.ON);// Enable Flash
mWebView.getSettings().setRenderPriority(RenderPriority.HIGH); // improves
// Feedback
// on
// touch
// mWebView.setBackgroundColor(0x00000000);//Transparent Screen When
// Loading
// mWebView.getSettings().setBuiltInZoomControls(true);//Set Zoom
// Controls
// mWebView.getSettings().setDisplayZoomControls(false);//Always Hide
// Zoom Controlls(Requires Api 11)
mWebView.getSettings().setAppCacheMaxSize(1024 * 1024 * 8);// Set Cache
// (8mb)
String appCachePath = getApplicationContext().getCacheDir()
.getAbsolutePath();// Set Cache (8mb)
mWebView.getSettings().setAppCachePath(appCachePath);// Set Cache (8mb)
mWebView.getSettings().setAllowFileAccess(true);// Set Cache (8mb)
mWebView.getSettings().setAppCacheEnabled(true);// Set Cache (8mb)
mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);// Set
// Cache
// (8mb)
mWebView.requestFocus(View.FOCUS_DOWN);// Enable WebView Interaction
// mWebView.setWebViewClient(new WebViewClient() {//Open URL on Error
// public void onReceivedError(WebView view, int errorCode, String
// description, String failingUrl) {//Open URL on Error
// mWebView.loadUrl("http://www.google.com");//Open URL on Error
// mWebView.loadUrl("file:///android_asset/error_404.jpg"); //Show
// Offline HTML file or Image on Error
// }
// });
mWebView.setWebViewClient(new WebViewClient());
// UPLOAD MANAGER PART-2//
mWebView.setWebChromeClient(new WebChromeClient() {
// For Android 3.0-
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("file/*");
Console.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
FILECHOOSER_RESULTCODE);
}
// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg,
String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
Console.this.startActivityForResult(
Intent.createChooser(i, "File Browser"),
FILECHOOSER_RESULTCODE);
}
// For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg,
String acceptType, String capture) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("FILe/*");
Console.this.startActivityForResult(
Intent.createChooser(i, "File Chooser"),
MainActivity.FILECHOOSER_RESULTCODE);
}
});
setContentView(mWebView);
}
// *********************//
private class HelloWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView webview, String url) {
webview.loadUrl(url);
return true;
}
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack())
{
mWebView.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
}
这是日志猫 -
11-16 08:21:40.968: E/AndroidRuntime(30304): FATAL EXCEPTION: main
11-16 08:21:40.968: E/AndroidRuntime(30304): Process: com.example.manage.airpush.com, PID: 30304
11-16 08:21:40.968: E/AndroidRuntime(30304): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.manage.airpush.com/com.example.manage.airpush.com.Console}: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2292)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2350)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread.access$800(ActivityThread.java:163)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1257)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.os.Handler.dispatchMessage(Handler.java:102)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.os.Looper.loop(Looper.java:157)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread.main(ActivityThread.java:5335)
11-16 08:21:40.968: E/AndroidRuntime(30304): at java.lang.reflect.Method.invokeNative(Native Method)
11-16 08:21:40.968: E/AndroidRuntime(30304): at java.lang.reflect.Method.invoke(Method.java:515)
11-16 08:21:40.968: E/AndroidRuntime(30304): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
11-16 08:21:40.968: E/AndroidRuntime(30304): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
11-16 08:21:40.968: E/AndroidRuntime(30304): at dalvik.system.NativeStart.main(Native Method)
11-16 08:21:40.968: E/AndroidRuntime(30304): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.view.ViewGroup.addViewInner(ViewGroup.java:3772)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.view.ViewGroup.addView(ViewGroup.java:3621)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.view.ViewGroup.addView(ViewGroup.java:3597)
11-16 08:21:40.968: E/AndroidRuntime(30304): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:359)
11-16 08:21:40.968: E/AndroidRuntime(30304): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:349)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.Activity.setContentView(Activity.java:1993)
11-16 08:21:40.968: E/AndroidRuntime(30304): at com.example.manage.airpush.com.Console.onCreate(Console.java:131)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.Activity.performCreate(Activity.java:5389)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
11-16 08:21:40.968: E/AndroidRuntime(30304): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2256)
11-16 08:21:40.968: E/AndroidRuntime(30304): ... 11 more
答案 0 :(得分：1)
setContentView(mWebView);的目的是什么？
我认为您不需要这样做，因为mWebView已经在View上。