列出Intent的所有额外内容

时间:2011-05-11 18:31:21

标签: android android-intent

出于调试原因,我想列出Intent的所有附加内容(及其值)。现在,获取密钥不是问题

Set<String> keys = intent.getExtras().keySet();

但获取键的值对我来说是一个,因为有些值是字符串,有些是布尔值...我怎么能在循环中获取值(循环键)并将值写入日志文件?谢谢你的提示!

14 个答案:

答案 0 :(得分:418)

以下是我用来获取无证件(第三方)意图的信息:

Bundle bundle = data.getExtras();
if (bundle != null) {
    for (String key : bundle.keySet()) {
        Object value = bundle.get(key);
        Log.d(TAG, String.format("%s %s (%s)", key,
                value.toString(), value.getClass().getName()));
    }
}

其中data是意图。确保在循环之前检查bundle是否为空。

答案 1 :(得分:106)

这就是我如何定义实用程序方法来转储Intent的所有额外内容。

import java.util.Iterator;
import java.util.Set;
import android.os.Bundle;


public static void dumpIntent(Intent i){

    Bundle bundle = i.getExtras();
    if (bundle != null) {
        Set<String> keys = bundle.keySet();
        Iterator<String> it = keys.iterator();
        Log.e(LOG_TAG,"Dumping Intent start");
        while (it.hasNext()) {
            String key = it.next();
            Log.e(LOG_TAG,"[" + key + "=" + bundle.get(key)+"]");
        }
        Log.e(LOG_TAG,"Dumping Intent end");
    }
}

答案 2 :(得分:26)

您可以在一行代码中执行此操作:

Log.d("intent URI", intent.toUri(0));

输出如下内容:

“#意图;行动= android.intent.action.MAIN;类别= android.intent.category.LAUNCHER; launchFlags = 0x10a00000;成分= com.mydomain.myapp / .StartActivity; sourceBounds = 12%20870%20276% 201167; l.profile = 0; 结束“

在这个字符串的末尾(我加粗的部分)你可以找到额外的列表(在这个例子中只有一个额外的)。

这是根据toUri documentation: “URI包含Intent的数据作为基URI,附加的片段描述了动作,类别,类型,标志,包,组件和附加内容。”

答案 3 :(得分:11)

private TextView tv;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    tv = new TextView(this);
    tv.setText("Extras: \n\r");

    setContentView(tv);

    StringBuilder str = new StringBuilder();
    Bundle bundle = getIntent().getExtras();
    if (bundle != null) {
        Set<String> keys = bundle.keySet();
        Iterator<String> it = keys.iterator();
        while (it.hasNext()) {
            String key = it.next();
            str.append(key);
            str.append(":");
            str.append(bundle.get(key));
            str.append("\n\r");
        }
        tv.setText(str.toString());
    }
}

答案 4 :(得分:8)

Bundle的get(String key)方法返回一个Object。最好的办法是旋转每个键上调用get(String)的键集,并使用Object上的toString()输出它们。这对于原语最有效,但是您可能会遇到没有实现toString()的对象的问题。

答案 5 :(得分:3)

Bundle extras = getIntent().getExtras();
Set<String> ks = extras.keySet();
Iterator<String> iterator = ks.iterator();
while (iterator.hasNext()) {
    Log.d("KEY", iterator.next());
}

答案 6 :(得分:2)

您可以使用for (String key : keys) { Object o = get(key);返回一个Object,在其上调用getClass().getName()以获取该类型,然后执行一组if name.equals(“String”)类型的事情来解决你应该实际调用的方法,以获得值?

答案 7 :(得分:2)

我想要一种方法将意图的内容输出到日志,并且能够轻松阅读,所以这就是我想出的。我创建了一个LogUtil类,然后创建了dumpIntent()方法@Pratik,并对其进行了一些修改。这就是它的全貌:

public class LogUtil {

    private static final String TAG = "IntentDump";

    public static void dumpIntent(Intent i){
        Bundle bundle = i.getExtras();
        if (bundle != null) {
            Set<String> keys = bundle.keySet();

            StringBuilder stringBuilder = new StringBuilder();
            stringBuilder.append("IntentDump \n\r");
            stringBuilder.append("-------------------------------------------------------------\n\r");

            for (String key : keys) {
                stringBuilder.append(key).append("=").append(bundle.get(key)).append("\n\r");
            }

            stringBuilder.append("-------------------------------------------------------------\n\r");
            Log.i(TAG, stringBuilder.toString());
        }
    }
}

希望这有助于某人!

答案 8 :(得分:1)

我注意到在Android源代码中,几乎所有操作都会强制Bundle取消其数据的分类。因此,如果(像我一样)你需要经常这样做以进行调试,下面的输入非常快:

Bundle extras = getIntent().getExtras();
extras.isEmpty(); // unparcel
System.out.println(extras);

答案 9 :(得分:1)

Kotlin oneliner,用于在调试模式下进行评估:

intent.extras.keySet().map { it to intent.extras.get(it) }

这将打印包中所有附加项的列表 extras

答案 10 :(得分:0)

很抱歉,如果这太详细或太晚,但这是我找到完成工作的唯一方法。最复杂的因素是java没有通过引用函数传递的事实,因此get --- Extra方法需要默认返回,并且不能修改布尔值来判断是否偶然返回默认值,或者因为结果不利。为此目的,让方法引发异常比让它返回默认值更好。

我在这里找到了我的信息:Android Intent Documentation

    //substitute your own intent here
    Intent intent = new Intent();
    intent.putExtra("first", "hello");
    intent.putExtra("second", 1);
    intent.putExtra("third", true);
    intent.putExtra("fourth", 1.01);
    // convert the set to a string array

Set Documentation

    String[] anArray = {};
    Set<String> extras1 = (Set<String>) intent.getExtras().keySet();
    String[] extras = (String[]) extras1.toArray(anArray);
    // an arraylist to hold all of the strings
    // rather than putting strings in here, you could display them
    ArrayList<String> endResult = new ArrayList<String>();
    for (int i=0; i<extras.length; i++) {
        //try using as a String
        String aString = intent.getStringExtra(extras[i]);
        // is a string, because the default return value for a non-string is null
        if (aString != null) {
            endResult.add(extras[i] + " : " + aString);
        }
        // not a string
        else {
            // try the next data type, int
            int anInt = intent.getIntExtra(extras[i], 0);
            // is the default value signifying that either it is not an int or that it happens to be 0 
            if (anInt == 0) {
                // is an int value that happens to be 0, the same as the default value
                if (intent.getIntExtra(extras[i], 1) != 1) {
                    endResult.add(extras[i] + " : " + Integer.toString(anInt));
                }
                // not an int value
                // try double (also works for float)
                else {
                    double aDouble = intent.getDoubleExtra(extras[i], 0.0);
                    // is the same as the default value, but does not necessarily mean that it is not double
                    if (aDouble == 0.0) {
                        // just happens that it was 0.0 and is a double
                        if (intent.getDoubleExtra(extras[i], 1.0) != 1.0) {
                            endResult.add(extras[i] + " : " + Double.toString(aDouble));
                        }
                        // keep looking...
                        else {
                            // lastly check for boolean
                            boolean aBool = intent.getBooleanExtra(extras[i], false);
                            // same as default, but not necessarily not a bool (still could be a bool)
                            if (aBool == false) {
                                // it is a bool!
                                if (intent.getBooleanExtra(extras[i], true) != true) {
                                    endResult.add(extras[i] + " : " + Boolean.toString(aBool));
                                }
                                else {
                                    //well, the road ends here unless you want to add some more data types
                                }
                            }
                            // it is a bool
                            else {
                                endResult.add(extras[i] + " : " + Boolean.toString(aBool));
                            }
                        }
                    }
                    // is a double
                    else {
                        endResult.add(extras[i] + " : " + Double.toString(aDouble));
                    }
                }
            }
            // is an int value
            else {
                endResult.add(extras[i] + " : " + Integer.toString(anInt));
            }
        }
    }
    // to display at the end
    for (int i=0; i<endResult.size(); i++) {
        Toast.makeText(this, endResult.get(i), Toast.LENGTH_SHORT).show();
    }

答案 11 :(得分:0)

Pratik's utility method的Kotlin版本会转储Intent的所有额外内容:

fun dumpIntent(intent: Intent) {

    val bundle: Bundle = intent.extras ?: return

    val keys = bundle.keySet()
    val it = keys.iterator()

    Log.d(TAG, "Dumping intent start")

    while (it.hasNext()) {
        val key = it.next()
        Log.d(TAG,"[" + key + "=" + bundle.get(key)+"]");
    }

    Log.d(TAG, "Dumping intent finish")

}

答案 12 :(得分:0)

简单调用捆绑意图:

Bundle bundle = intent.getExtras();
if (bundle != null) {
    for (String key : bundle.keySet()) {
        Log.e(TAG, key + " : " + (bundle.get(key) != null ? bundle.get(key) : "NULL"));
    }
}

答案 13 :(得分:-1)

如果要进行调试,你想要的只是一个字符串(OP暗示的那种,但没有明确说明),只需在额外的toString上使用Bundle

intent.getExtras().toString()

它返回一个字符串,如:

Bundle[{key1=value1, key2=value2, key3=value3}]

文档:Bundle.toString()(不幸的是,它是默认的Object.toString() javadoc,因此在这里毫无用处。)