Java 致命异常:main无法启动活动android
这是我的错误,当我启动我的应用程序时,它崩溃了。我不理解错误的意思:Java 致命异常:main无法启动活动android,java,android,Java,Android,这是我的错误,当我启动我的应用程序时,它崩溃了。我不理解错误的意思: 02-04 13:45:36.588 7166-7166/? E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.erik_.tvmanager, PID: 7166 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.erik_.tvmanager/c
02-04 13:45:36.588 7166-7166/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.erik_.tvmanager, PID: 7166
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.erik_.tvmanager/com.example.erik_.tvmanager.MainActivity}: info.movito.themoviedbapi.tools.MovieDbException: Failed to read configuration
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: info.movito.themoviedbapi.tools.MovieDbException: Failed to read configuration
at info.movito.themoviedbapi.TmdbApi.<init>(TmdbApi.java:48)
at info.movito.themoviedbapi.TmdbApi.<init>(TmdbApi.java:35)
at com.example.erik_.tvmanager.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.RuntimeException: value of parameter 'api_key' can not be empty
at info.movito.themoviedbapi.tools.ApiUrl.addParam(ApiUrl.java:100)
at info.movito.themoviedbapi.TmdbApi.requestWebPage(TmdbApi.java:57)
at info.movito.themoviedbapi.AbstractTmdbApi.mapJsonResult(AbstractTmdbApi.java:58)
at info.movito.themoviedbapi.AbstractTmdbApi.mapJsonResult(AbstractTmdbApi.java:45)
at info.movito.themoviedbapi.AbstractTmdbApi.mapJsonResult(AbstractTmdbApi.java:40)
at info.movito.themoviedbapi.TmdbConfig.getConfig(TmdbConfig.java:18)
at info.movito.themoviedbapi.TmdbApi.<init>(TmdbApi.java:44)
at info.movito.themoviedbapi.TmdbApi.<init>(TmdbApi.java:35)
at com.example.erik_.tvmanager.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
这是我的主要活动,我想在我的文本视图中设置文本
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import org.w3c.dom.Text;
import info.movito.themoviedbapi.TmdbApi;
import info.movito.themoviedbapi.TmdbMovies;
import info.movito.themoviedbapi.model.MovieDb;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
TextView textView=(TextView) findViewById(R.id.prova);
String apiKey = System.getenv("MyapiKey");
TmdbApi tmdbApi = new TmdbApi(apiKey);
TmdbMovies movies = tmdbApi.getMovies();
MovieDb movie = movies.getMovie(5353, "en");
textView.setText(movie.getTitle());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
请看这里:
java.lang.RuntimeException: value of parameter 'api_key' can not be empty
问题如下:
TmdbMovies movies = tmdbApi.getMovies();
确保字符串apiKey
不为空
String apiKey = System.getenv("MyapiKey");
TmdbApi tmdbApi = new TmdbApi(apiKey);
我不知道是什么System.getenv(“Myapikey”)代码>返回,但我很确定它什么都不是。请参见此处:
java.lang.RuntimeException: value of parameter 'api_key' can not be empty
问题如下:
TmdbMovies movies = tmdbApi.getMovies();
确保字符串apiKey
不为空
String apiKey = System.getenv("MyapiKey");
TmdbApi tmdbApi = new TmdbApi(apiKey);
我不知道是什么System.getenv(“Myapikey”)
返回,但我很确定它什么都不是。如果您正在与某个第三方API集成,请确保对此进行了正确的设置,原因:java.lang.RuntimeException:参数“API_key”的值不能为空。
。请确保字符串apiKey=System.getenv(“MyapiKey”)
不返回空字符串您需要阅读此第三方库的文档以了解错误原因。如果您正在与某些第三方API集成,请确保为此进行了正确的设置,原因:java.lang.RuntimeException:参数“API_key”的值不能为空
。确保字符串apiKey=System.getenv(“MyapiKey”);
不返回空字符串您需要阅读此第三方库的文档才能了解错误原因。