如何拨打电话编程方式的Andr​​oid？ [英] How to make phone calls programmatically in Android?

问题描述

我在useful_numbers_item_fragment.xml定义以下布局：

I have the following layout defined in useful_numbers_item_fragment.xml:

<LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:id="@+id/call_linear_layout">

        <LinearLayout
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:orientation="vertical">
            <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/useful_nums_item_name"/>

            <TextView
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:id="@+id/useful_nums_item_value"/>
        </LinearLayout>

       <ImageButton
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:src="@drawable/call"
                android:id="@+id/call_btn"
                android:onClick="callNumber"/>

    </LinearLayout>

我动态填充在一个名为UNItemListFragment.java类两个文本的意见
在onCreate方法：

I dynamically populate the two text views in a class called UNItemListFragment.java in the onCreate method:

public void onCreate(Bundle savedInstance) {
        super.onCreate(savedInstance);

        if (getArguments().containsKey(Constants.UNItem.GROUP_ID)) {

            simpleCursorAdapter = new SimpleCursorAdapter(getActivity(), R.layout.useful_numbers_item_fragment, null,
                    new String[]{Constants.UNItem.NAME, Constants.UNItem.VALUE},
                    new int[]{R.id.useful_nums_item_name, R.id.useful_nums_item_value}, 0);
            setListAdapter(simpleCursorAdapter);
            getLoaderManager().initLoader(0, getArguments(), this);

        }
    }

对于每个编号，如果我按一下按钮我想打一个电话
调用callNumber方法，当用户点击这个按钮：

For each number if i click on the button i want to make a phone call by calling the callNumber method when the user clicks the button:

public void callNumber(View view) {
        Intent callIntent = new Intent(Intent.ACTION_CALL);
        TextView unItemVal = (TextView) findViewById(R.id.useful_nums_item_value);

            String phoneNumber = unItemVal.getText().toString();
            callIntent.setData(Uri.parse("tel:" + phoneNumber));
            startActivity(callIntent);
    }

这是确定当我单击列表中的第一个按钮，但是当我点击其他按钮
它继续呼叫第一行中所定义的数量...

It is ok when I click the first button in the list, but when I click on the other buttons it continues calling the number defined in the first row...

不知道如何解决这个问题？

Any idea how to resolve this?

推荐答案

的问题是，这一行：

TextView unItemVal = (TextView) findViewById(R.id.useful_nums_item_value);

是在活动执行，因此 findViewById 将始终与ID，它很可能在列表中的第一项返回的第一个项目。

is executed on the activity, so the findViewById will always return the first item with that id, which is likely the first item in the list.

的最的方式来解决，这将是覆盖适配器并添加包含电话号码，到视图的标签。 A 快速的办法解决这一问题将是在视图层次尾随，像这样：

The best way to fix this would be to override the adapter and add a tag containing the phone number to the view. A quick way to fix this would be to tag along in the view hierarchy, like so:

public void callNumber(View view) {
    if( view != null ) { // view is the button tapped
        View parent = view.getParent(); // this should be the LinearLayout
        if( parent instanceof LinearLayout ) {
            TextView unItemVal = (TextView) ((LinearLayout)parent).findViewById(R.id.useful_nums_item_value);
            if( unItemVal != null ) {
                Intent callIntent = new Intent(Intent.ACTION_CALL);
                String phoneNumber = unItemVal.getText().toString();
                callIntent.setData(Uri.parse("tel:" + phoneNumber));
                startActivity(callIntent);
            }
        }
    }
}

这会找到被点击的按钮父，然后找到包含内的数字文本视图的ViewGroup 。

This would find the parent for the button that was clicked, and then find the text-view containing the number within that ViewGroup.

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