Android中的WebView实战详解（二）

四、如何用WebView下载软件？

四、如何用WebView下载软件？

public class MainActivity extends AppCompatActivity {
    private WebView mWebView;
    private Button mBack;
    private TextView mTitleView;
    private Button mRefresh;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mBack = (Button) findViewById(R.id.back);
        mTitleView = (TextView) findViewById(R.id.titleView);
        mRefresh = (Button) findViewById(R.id.refresh);
        mBack.setOnClickListener(new MyListener());
        mRefresh.setOnClickListener(new MyListener());

        mWebView = (WebView) findViewById(R.id.webView);
        mWebView.loadUrl("http://shouji.baidu.com/");
        //该方法作用为当一个网页跳转另一个网页时，仍然在当前webview中显示
        mWebView.setWebViewClient(new WebViewClient());
        //该方法是接收标题
        mWebView.setWebChromeClient(new WebChromeClient(){
            @Override
            public void onReceivedTitle(WebView view, String title) {
                mTitleView.setText(title);
                super.onReceivedTitle(view, title);
            }
        });

        mWebView.setDownloadListener(new DownloadListener() {
            @Override
            public void onDownloadStart(String s, String s1, String s2, String s3, long l) {
                Uri uri = Uri.parse(s);
                Intent intent = new Intent(Intent.ACTION_VIEW,uri);
                startActivity(intent);
            }
        });

    }
    class MyListener implements View.OnClickListener {

        @Override
        public void onClick(View view) {
            switch (view.getId()){
                case R.id.back:
                    finish();
                    break;
                case R.id.refresh:
                    mWebView.reload();
                    break;
                default:
                    break;
            }
        }
    }
}