Question

您好我从互联网上可以学习的一门课程中学习意图并且任务是构建使用隐式意图的应用程序：

1.与网页连接 - 并且工作正常 2.连接显示位置的地图 - 不起作用 3.分享共享数据的意图 - 不是工作

这是Java代码：

import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.v4.app.ShareCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

import java.net.URI;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void onClickOpenWebpageButton(View v) {
        String urlAsString = "http://example.com";
        openWebPage(urlAsString);


    }

    public void onClickShareTextButton(View v) {
        String textThatYouWantToShare = "Sharing the coolest thing I've learned so far. You should " +
                "check out ###### and ####### Android ######!";

        shareText(textThatYouWantToShare);
    }
    public void onClickOpenAddressButton(View v) {
        String addressString = "1600 Amphitheatre Parkway, CA";

        Uri.Builder builder = new Uri.Builder();
        builder.scheme("geo")
                .path("0.0")
                .query(addressString);
        Uri addressUri = builder.build();

        showMap(addressUri);
    }

    private void openWebPage(String url) {

        Uri webpage = Uri.parse(url);
        Intent intent = new Intent(Intent.ACTION_VIEW, webpage);
        if (intent.resolveActivity(getPackageManager()) != null) {
            startActivity(intent);
        }

    }

    private void showMap(Uri geoLocation) {

        Intent intent = new Intent(Intent.ACTION_VIEW);

        intent.setData(geoLocation);

        if (intent.resolveActivity(getPackageManager()) != null) {

            startActivity(intent);
        }
    }

    private void shareText(String textToShare) {

        String mimeType = "text/plain";

        String title = "Learning how to share";

        ShareCompat.IntentBuilder
                .from(this)
                .setType(mimeType)
                .setChooserTitle(title)
                .setText(textToShare)
                .startChooser();

    }
}

和XML布局：

<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"
    android:padding="32dp"
    tools:context=".MainActivity">

    <Button
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:onClick="onClickOpenWebpageButton"
        android:text="Open Website"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:onClick="onClickOpenAddressButton"
        android:text="Open Location in Map"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:onClick="onClickShareTextButton"
        android:text="Share Text Content"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:onClick="createYourOwn"
        android:text="Create Your Own"/>

</LinearLayout>

我以为我忘记了清单中的一些权限，但我没有＆＃39;知道哪一个

隐含意图不起作用

0 个答案: