import android.annotation.TargetApi;
import android.app.Activity;
import android.content.ClipData;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.TextView;
import com.zjsos.tzlawenforcement.util.SPUtils;
public class WebViewActivity extends AppCompatActivity {
private ValueCallback<Uri> uploadMessage;
private ValueCallback<Uri[]> uploadMessageAboveL;
private final static int FILE_CHOOSER_RESULT_CODE = 10000;
private Toolbar toolbar;
private WebView webview;
private TextView textView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web_view);
webview = (WebView) findViewById(R.id.web_view);
toolbar=findViewById(R.id.toolbar);
textView=findViewById(R.id.titile);
WebSettings settings = webview.getSettings();
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
settings.setJavaScriptEnabled(true);
settings.setAllowContentAccess(true);
settings.setDatabaseEnabled(true);
settings.setSavePassword(false);
settings.setSaveFormData(false);
settings.setSupportZoom(false);
// 自适应屏幕大小
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
settings.setAppCacheEnabled(true);
settings.setDomStorageEnabled(true);
settings.setAllowFileAccess(true);
settings.setAppCacheMaxSize(1024 * 1024 * 8);
settings.setCacheMode(WebSettings.LOAD_NO_CACHE);
settings.setSupportMultipleWindows(true);
settings.setBlockNetworkImage(false);//解决图片不显示
// 1.设置WebChromeClient,重写文件上传回调
webview.setWebChromeClient(new WebChromeClient() {
// For Android < 3.0
public void openFileChooser(ValueCallback<Uri> valueCallback) {
uploadMessage = valueCallback;
openImageChooserActivity();
}
// For Android >= 3.0
public void openFileChooser(ValueCallback valueCallback, String acceptType) {
uploadMessage = valueCallback;
openImageChooserActivity();
}
//For Android >= 4.1
public void openFileChooser(ValueCallback<Uri> valueCallback, String acceptType, String capture) {
uploadMessage = valueCallback;
openImageChooserActivity();
}
// For Android >= 5.0
@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
uploadMessageAboveL = filePathCallback;
openImageChooserActivity();
return true;
}
});
initToolbar("记分管理");
webview.loadUrl("/text.html");
}
// 2.回调方法触发本地选择文件
private void openImageChooserActivity() {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
// i.setType("image/*");//图片上传
// i.setType("file/*");//文件上传
i.setType("*/*");//文件上传
startActivityForResult(Intent.createChooser(i, "Image Chooser"), FILE_CHOOSER_RESULT_CODE);
}
// 3.选择图片后处理
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == FILE_CHOOSER_RESULT_CODE) {
if (null == uploadMessage && null == uploadMessageAboveL) return;
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
// Uri result = (((data == null) || (resultCode != RESULT_OK)) ? null : data.getData());
if (uploadMessageAboveL != null) {
onActivityResultAboveL(requestCode, resultCode, data);
} else if (uploadMessage != null) {
uploadMessage.onReceiveValue(result);
uploadMessage = null;
}
} else {
//这里uploadMessage跟uploadMessageAboveL在不同系统版本下分别持有了
//WebView对象,在用户取消文件选择器的情况下,需给onReceiveValue传null返回值
//否则WebView在未收到返回值的情况下,无法进行任何操作,文件选择器会失效
if (uploadMessage != null) {
uploadMessage.onReceiveValue(null);
uploadMessage = null;
} else if (uploadMessageAboveL != null) {
uploadMessageAboveL.onReceiveValue(null);
uploadMessageAboveL = null;
}
}
}
// 4. 选择内容回调到Html页面
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void onActivityResultAboveL(int requestCode, int resultCode, Intent intent) {
if (requestCode != FILE_CHOOSER_RESULT_CODE || uploadMessageAboveL == null)
return;
Uri[] results = null;
if (resultCode == Activity.RESULT_OK) {
if (intent != null) {
String dataString = intent.getDataString();
ClipData clipData = intent.getClipData();
if (clipData != null) {
results = new Uri[clipData.getItemCount()];
for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
results[i] = item.getUri();
}
}
if (dataString != null)
results = new Uri[]{Uri.parse(dataString)};
}
}
uploadMessageAboveL.onReceiveValue(results);
uploadMessageAboveL = null;
}
private void initToolbar(String title) {
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
toolbar.setNavigationOnClickListener(v -> {
if (webview.canGoBack())
webview.goBack();
else
removeFragment();
});
textView.setText(title);
}
public void removeFragment() {
if (getSupportFragmentManager().getBackStackEntryCount() > 1) {
getSupportFragmentManager().popBackStack();
} else if (getSupportFragmentManager().getBackStackEntryCount() == 1) {
getSupportFragmentManager().popBackStack();
if (Build.VERSION.SDK_INT >= 21) {
getWindow().setStatusBarColor(ContextCompat.getColor(this, com.jaydenxiao.common.R.color.status_main_color));
getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
// InputMethodManager imm = (InputMethodManager) this.getSystemService(Context.INPUT_METHOD_SERVICE);
// boolean a = imm.isActive();
// if (imm.isActive())
// Log.d("", "");
}
} else {
finish();
}
}
}